diff --git a/onionshare/__init__.py b/onionshare/__init__.py
index e82c7929..9946a700 100644
--- a/onionshare/__init__.py
+++ b/onionshare/__init__.py
@@ -87,6 +87,9 @@ def main(cwd=None):
     parser.add_argument(
         "--website", action="store_true", dest="website", help="Publish website"
     )
+    parser.add_argument(
+        "--chat", action="store_true", dest="chat", help="Start chat server"
+    )
     # Tor connection-related args
     parser.add_argument(
         "--local-only",
@@ -196,6 +199,7 @@ def main(cwd=None):
 
     receive = bool(args.receive)
     website = bool(args.website)
+    chat = bool(args.chat)
     local_only = bool(args.local_only)
     connect_timeout = int(args.connect_timeout)
     config_filename = args.config
@@ -214,6 +218,8 @@ def main(cwd=None):
         mode = "receive"
     elif website:
         mode = "website"
+    elif chat:
+        mode = "chat"
     else:
         mode = "share"
 
diff --git a/onionshare/common.py b/onionshare/common.py
index b74534ff..18e4841d 100644
--- a/onionshare/common.py
+++ b/onionshare/common.py
@@ -221,6 +221,16 @@ class Common:
         r = random.SystemRandom()
         return "-".join(r.choice(wordlist) for _ in range(word_count))
 
+    def build_username(self, word_count=2):
+        """
+        Returns a random string made of words from the wordlist, such as "deter-trig".
+        """
+        with open(self.get_resource_path("wordlist.txt")) as f:
+            wordlist = f.read().split()
+
+        r = random.SystemRandom()
+        return "-".join(r.choice(wordlist) for _ in range(word_count))
+
     @staticmethod
     def random_string(num_bytes, output_len=None):
         """
diff --git a/onionshare/mode_settings.py b/onionshare/mode_settings.py
index 9201721e..8216c1d8 100644
--- a/onionshare/mode_settings.py
+++ b/onionshare/mode_settings.py
@@ -49,6 +49,7 @@ class ModeSettings:
             "share": {"autostop_sharing": True, "filenames": []},
             "receive": {"data_dir": self.build_default_receive_data_dir()},
             "website": {"disable_csp": False, "filenames": []},
+            "chat": {"room": "default"},
         }
         self._settings = {}
 
diff --git a/onionshare/web/chat_mode.py b/onionshare/web/chat_mode.py
new file mode 100644
index 00000000..d07eba81
--- /dev/null
+++ b/onionshare/web/chat_mode.py
@@ -0,0 +1,141 @@
+from flask import (
+    Request,
+    request,
+    render_template,
+    make_response,
+    jsonify,
+    redirect,
+    session,
+)
+from werkzeug.utils import secure_filename
+from flask_socketio import emit, join_room, leave_room
+
+
+class ChatModeWeb:
+    """
+    All of the web logic for chat mode
+    """
+
+    def __init__(self, common, web):
+        self.common = common
+        self.common.log("ChatModeWeb", "__init__")
+
+        self.web = web
+
+        # This tracks users in the room
+        self.connected_users = []
+
+        # This tracks the history id
+        self.cur_history_id = 0
+
+        self.define_routes()
+
+    def define_routes(self):
+        """
+        The web app routes for chatting
+        """
+
+        @self.web.app.route("/")
+        def index():
+            history_id = self.cur_history_id
+            self.cur_history_id += 1
+            session["name"] = (
+                session.get("name")
+                if session.get("name")
+                else self.common.build_username()
+            )
+            session["room"] = self.web.settings.default_settings["chat"]["room"]
+            self.web.add_request(
+                request.path, {"id": history_id, "status_code": 200},
+            )
+
+            self.web.add_request(self.web.REQUEST_LOAD, request.path)
+            r = make_response(
+                render_template(
+                    "chat.html",
+                    static_url_path=self.web.static_url_path,
+                    username=session.get("name"),
+                )
+            )
+            return self.web.add_security_headers(r)
+
+        @self.web.app.route("/update-session-username", methods=["POST"])
+        def update_session_username():
+            history_id = self.cur_history_id
+            data = request.get_json()
+            session["name"] = data.get("username", session.get("name"))
+            self.web.add_request(
+                request.path, {"id": history_id, "status_code": 200},
+            )
+
+            self.web.add_request(self.web.REQUEST_LOAD, request.path)
+            r = make_response(
+                jsonify(
+                    username=session.get("name"),
+                    success=True,
+                )
+            )
+            return self.web.add_security_headers(r)
+
+        @self.web.socketio.on("joined", namespace="/chat")
+        def joined(message):
+            """Sent by clients when they enter a room.
+            A status message is broadcast to all people in the room."""
+            self.connected_users.append(session.get("name"))
+            join_room(session.get("room"))
+            emit(
+                "status",
+                {
+                    "msg": "{} has joined.".format(session.get("name")),
+                    "connected_users": self.connected_users,
+                    "user": session.get("name"),
+                },
+                room=session.get("room"),
+            )
+
+        @self.web.socketio.on("text", namespace="/chat")
+        def text(message):
+            """Sent by a client when the user entered a new message.
+            The message is sent to all people in the room."""
+            emit(
+                "message",
+                {"msg": "{}: {}".format(session.get("name"), message["msg"])},
+                room=session.get("room"),
+            )
+
+        @self.web.socketio.on("update_username", namespace="/chat")
+        def update_username(message):
+            """Sent by a client when the user updates their username.
+            The message is sent to all people in the room."""
+            current_name = session.get("name")
+            session["name"] = message["username"]
+            self.connected_users[
+                self.connected_users.index(current_name)
+            ] = session.get("name")
+            emit(
+                "status",
+                {
+                    "msg": "{} has updated their username to: {}".format(
+                        current_name, session.get("name")
+                    ),
+                    "connected_users": self.connected_users,
+                    "old_name": current_name,
+                    "new_name": session.get("name"),
+                },
+                room=session.get("room"),
+            )
+
+        @self.web.socketio.on("disconnect", namespace="/chat")
+        def disconnect():
+            """Sent by clients when they disconnect from a room.
+            A status message is broadcast to all people in the room."""
+            self.connected_users.remove(session.get("name"))
+            leave_room(session.get("room"))
+            emit(
+                "status",
+                {
+                    "msg": "{} has left the room.".format(session.get("name")),
+                    "connected_users": self.connected_users,
+                },
+                room=session.get("room"),
+            )
diff --git a/onionshare/web/web.py b/onionshare/web/web.py
index 8582e694..3a22c789 100644
--- a/onionshare/web/web.py
+++ b/onionshare/web/web.py
@@ -20,12 +20,14 @@ from flask import (
     __version__ as flask_version,
 )
 from flask_httpauth import HTTPBasicAuth
+from flask_socketio import SocketIO
 
 from .. import strings
 
 from .share_mode import ShareModeWeb
 from .receive_mode import ReceiveModeWeb, ReceiveModeWSGIMiddleware, ReceiveModeRequest
 from .website_mode import WebsiteModeWeb
+from .chat_mode import ChatModeWeb
 
 # Stub out flask's show_server_banner function, to avoiding showing warnings that
 # are not applicable to OnionShare
@@ -134,12 +136,17 @@ class Web:
         self.share_mode = None
         self.receive_mode = None
         self.website_mode = None
+        self.chat_mode = None
         if self.mode == "share":
             self.share_mode = ShareModeWeb(self.common, self)
         elif self.mode == "receive":
             self.receive_mode = ReceiveModeWeb(self.common, self)
         elif self.mode == "website":
             self.website_mode = WebsiteModeWeb(self.common, self)
+        elif self.mode == "chat":
+            self.socketio = SocketIO()
+            self.socketio.init_app(self.app)
+            self.chat_mode = ChatModeWeb(self.common, self)
 
     def get_mode(self):
         if self.mode == "share":
@@ -148,6 +155,8 @@ class Web:
             return self.receive_mode
         elif self.mode == "website":
             return self.website_mode
+        elif self.mode == "chat":
+            return self.chat_mode
         else:
             return None
 
@@ -366,7 +375,10 @@ class Web:
             host = "127.0.0.1"
 
         self.running = True
-        self.app.run(host=host, port=port, threaded=True)
+        if self.mode == "chat":
+            self.socketio.run(self.app, host=host, port=port)
+        else:
+            self.app.run(host=host, port=port, threaded=True)
 
     def stop(self, port):
         """
diff --git a/onionshare_gui/gui_common.py b/onionshare_gui/gui_common.py
index eb259301..47ffd787 100644
--- a/onionshare_gui/gui_common.py
+++ b/onionshare_gui/gui_common.py
@@ -31,6 +31,7 @@ class GuiCommon:
     MODE_SHARE = "share"
     MODE_RECEIVE = "receive"
     MODE_WEBSITE = "website"
+    MODE_CHAT = "chat"
 
     def __init__(self, common, qtapp, local_only):
         self.common = common
diff --git a/onionshare_gui/tab/mode/chat_mode/__init__.py b/onionshare_gui/tab/mode/chat_mode/__init__.py
new file mode 100644
index 00000000..52b61592
--- /dev/null
+++ b/onionshare_gui/tab/mode/chat_mode/__init__.py
@@ -0,0 +1,133 @@
+# -*- coding: utf-8 -*-
+"""
+OnionShare | https://onionshare.org/
+
+Copyright (C) 2014-2018 Micah Lee <micah@micahflee.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+import os
+import random
+import string
+
+from PyQt5 import QtCore, QtWidgets, QtGui
+
+from onionshare import strings
+from onionshare.onion import *
+from onionshare.common import Common
+from onionshare.web import Web
+
+from .. import Mode
+from ....widgets import MinimumWidthWidget
+
+
+class ChatMode(Mode):
+    """
+    Parts of the main window UI for sharing files.
+    """
+
+    success = QtCore.pyqtSignal()
+    error = QtCore.pyqtSignal(str)
+
+    def init(self):
+        """
+        Custom initialization for ChatMode.
+        """
+        # Create the Web object
+        self.web = Web(self.common, True, self.settings, "chat")
+
+        # Header
+        self.header_label.setText(strings._("gui_new_tab_chat_button"))
+
+        # Server status
+        self.server_status.set_mode("chat")
+        self.server_status.server_started_finished.connect(self.update_primary_action)
+        self.server_status.server_stopped.connect(self.update_primary_action)
+        self.server_status.server_canceled.connect(self.update_primary_action)
+        # Tell server_status about web, then update
+        self.server_status.web = self.web
+        self.server_status.update()
+
+        # Top bar
+        top_bar_layout = QtWidgets.QHBoxLayout()
+        top_bar_layout.addStretch()
+
+        # Main layout
+        self.main_layout = QtWidgets.QVBoxLayout()
+        self.main_layout.addLayout(top_bar_layout)
+        self.main_layout.addWidget(self.primary_action)
+        self.main_layout.addStretch()
+        self.main_layout.addWidget(MinimumWidthWidget(700))
+
+        # Column layout
+        self.column_layout = QtWidgets.QHBoxLayout()
+        self.column_layout.addLayout(self.main_layout)
+
+        # Wrapper layout
+        self.wrapper_layout = QtWidgets.QVBoxLayout()
+        self.wrapper_layout.addWidget(self.header_label)
+        self.wrapper_layout.addLayout(self.column_layout)
+        self.setLayout(self.wrapper_layout)
+
+    def get_stop_server_autostop_timer_text(self):
+        """
+        Return the string to put on the stop server button, if there's an auto-stop timer
+        """
+        return strings._("gui_share_stop_server_autostop_timer")
+
+    def autostop_timer_finished_should_stop_server(self):
+        """
+        The auto-stop timer expired, should we stop the server? Returns a bool
+        """
+
+        self.server_status.stop_server()
+        self.server_status_label.setText(strings._("close_on_autostop_timer"))
+        return True
+
+    def start_server_custom(self):
+        """
+        Starting the server.
+        """
+        # Reset web counters
+        self.web.chat_mode.cur_history_id = 0
+        self.web.reset_invalid_passwords()
+
+    def start_server_step2_custom(self):
+        """
+        Step 2 in starting the server. Zipping up files.
+        """
+        # Continue
+        self.starting_server_step3.emit()
+        self.start_server_finished.emit()
+
+    def cancel_server_custom(self):
+        """
+        Log that the server has been cancelled
+        """
+        self.common.log("ChatMode", "cancel_server")
+
+    def handle_tor_broke_custom(self):
+        """
+        Connection to Tor broke.
+        """
+        self.primary_action.hide()
+
+    def on_reload_settings(self):
+        """
+        We should be ok to re-enable the 'Start Receive Mode' button now.
+        """
+        self.primary_action.show()
+
+    def update_primary_action(self):
+        self.common.log("ChatMode", "update_primary_action")
diff --git a/onionshare_gui/tab/server_status.py b/onionshare_gui/tab/server_status.py
index b5e20765..71c6c228 100644
--- a/onionshare_gui/tab/server_status.py
+++ b/onionshare_gui/tab/server_status.py
@@ -270,6 +270,8 @@ class ServerStatus(QtWidgets.QWidget):
                     self.server_button.setText(strings._("gui_share_start_server"))
                 elif self.mode == self.common.gui.MODE_WEBSITE:
                     self.server_button.setText(strings._("gui_share_start_server"))
+                elif self.mode == self.common.gui.MODE_CHAT:
+                    self.server_button.setText(strings._("gui_chat_start_server"))
                 else:
                     self.server_button.setText(strings._("gui_receive_start_server"))
                 self.server_button.setToolTip("")
@@ -282,6 +284,8 @@ class ServerStatus(QtWidgets.QWidget):
                     self.server_button.setText(strings._("gui_share_stop_server"))
                 elif self.mode == self.common.gui.MODE_WEBSITE:
                     self.server_button.setText(strings._("gui_share_stop_server"))
+                elif self.mode == self.common.gui.MODE_CHAT:
+                    self.server_button.setText(strings._("gui_chat_stop_server"))
                 else:
                     self.server_button.setText(strings._("gui_receive_stop_server"))
             elif self.status == self.STATUS_WORKING:
diff --git a/onionshare_gui/tab/tab.py b/onionshare_gui/tab/tab.py
index 5d1fde55..4f006949 100644
--- a/onionshare_gui/tab/tab.py
+++ b/onionshare_gui/tab/tab.py
@@ -28,6 +28,7 @@ from onionshare.mode_settings import ModeSettings
 from .mode.share_mode import ShareMode
 from .mode.receive_mode import ReceiveMode
 from .mode.website_mode import WebsiteMode
+from .mode.chat_mode import ChatMode
 
 from .server_status import ServerStatus
 
@@ -93,6 +94,16 @@ class Tab(QtWidgets.QWidget):
         )
         website_description.setWordWrap(True)
 
+        self.chat_button = QtWidgets.QPushButton(
+            strings._("gui_new_tab_chat_button")
+        )
+        self.chat_button.setStyleSheet(self.common.gui.css["mode_new_tab_button"])
+        self.chat_button.clicked.connect(self.chat_mode_clicked)
+        chat_description = QtWidgets.QLabel(
+            strings._("gui_new_tab_chat_description")
+        )
+        chat_description.setWordWrap(True)
+
         new_tab_layout = QtWidgets.QVBoxLayout()
         new_tab_layout.addStretch(1)
         new_tab_layout.addWidget(self.share_button)
@@ -103,6 +114,9 @@ class Tab(QtWidgets.QWidget):
         new_tab_layout.addSpacing(50)
         new_tab_layout.addWidget(self.website_button)
         new_tab_layout.addWidget(website_description)
+        new_tab_layout.addSpacing(50)
+        new_tab_layout.addWidget(self.chat_button)
+        new_tab_layout.addWidget(chat_description)
         new_tab_layout.addStretch(3)
 
         new_tab_inner = QtWidgets.QWidget()
@@ -278,6 +292,43 @@ class Tab(QtWidgets.QWidget):
         self.update_server_status_indicator()
         self.timer.start(500)
 
+    def chat_mode_clicked(self):
+        self.common.log("Tab", "chat_mode_clicked")
+        self.mode = self.common.gui.MODE_CHAT
+        self.new_tab.hide()
+
+        self.chat_mode = ChatMode(self)
+        self.chat_mode.change_persistent.connect(self.change_persistent)
+
+        self.layout.addWidget(self.chat_mode)
+        self.chat_mode.show()
+
+        self.chat_mode.init()
+        self.chat_mode.server_status.server_started.connect(
+            self.update_server_status_indicator
+        )
+        self.chat_mode.server_status.server_stopped.connect(
+            self.update_server_status_indicator
+        )
+        self.chat_mode.start_server_finished.connect(
+            self.update_server_status_indicator
+        )
+        self.chat_mode.stop_server_finished.connect(
+            self.update_server_status_indicator
+        )
+        self.chat_mode.stop_server_finished.connect(self.stop_server_finished)
+        self.chat_mode.start_server_finished.connect(self.clear_message)
+        self.chat_mode.server_status.button_clicked.connect(self.clear_message)
+        self.chat_mode.server_status.url_copied.connect(self.copy_url)
+        self.chat_mode.server_status.hidservauth_copied.connect(
+            self.copy_hidservauth
+        )
+
+        self.change_title.emit(self.tab_id, strings._("gui_new_tab_chat_button"))
+
+        self.update_server_status_indicator()
+        self.timer.start(500)
+
     def update_server_status_indicator(self):
         # Set the status image
         if self.mode == self.common.gui.MODE_SHARE:
@@ -486,6 +537,8 @@ class Tab(QtWidgets.QWidget):
                 return self.share_mode
             elif self.mode == self.common.gui.MODE_RECEIVE:
                 return self.receive_mode
+            elif self.mode == self.common.gui.MODE_CHAT:
+                return self.chat_mode
             else:
                 return self.website_mode
         else:
diff --git a/poetry.lock b/poetry.lock
index 185428e1..07693b0c 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -62,13 +62,33 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 version = "0.4.3"
 
 [[package]]
-category = "dev"
-description = "Python 2.7 backport of the \"dis\" module from Python 3.5+"
-marker = "sys_platform == \"darwin\""
-name = "dis3"
+category = "main"
+description = "DNS toolkit"
+name = "dnspython"
+optional = false
+python-versions = ">=3.6"
+version = "2.0.0"
+
+[package.extras]
+curio = ["curio (>=1.2)", "sniffio (>=1.1)"]
+dnssec = ["cryptography (>=2.6)"]
+doh = ["requests", "requests-toolbelt"]
+idna = ["idna (>=2.1)"]
+trio = ["trio (>=0.14.0)", "sniffio (>=1.1)"]
+
+[[package]]
+category = "main"
+description = "Highly concurrent networking library"
+name = "eventlet"
 optional = false
 python-versions = "*"
-version = "0.1.3"
+version = "0.25.2"
+
+[package.dependencies]
+dnspython = ">=1.15.0"
+greenlet = ">=0.3"
+monotonic = ">=1.4"
+six = ">=1.10.0"
 
 [[package]]
 category = "main"
@@ -100,6 +120,18 @@ version = "4.1.0"
 [package.dependencies]
 Flask = "*"
 
+[[package]]
+category = "main"
+description = "Socket.IO integration for Flask applications"
+name = "flask-socketio"
+optional = false
+python-versions = "*"
+version = "4.3.1"
+
+[package.dependencies]
+Flask = ">=0.9"
+python-socketio = ">=4.3.0"
+
 [[package]]
 category = "main"
 description = "Clean single-source support for Python 3 and 2"
@@ -108,6 +140,14 @@ optional = false
 python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
 version = "0.18.2"
 
+[[package]]
+category = "main"
+description = "Lightweight in-process concurrent programming"
+name = "greenlet"
+optional = false
+python-versions = "*"
+version = "0.4.16"
+
 [[package]]
 category = "main"
 description = "Internationalized Domain Names in Applications (IDNA)"
@@ -132,6 +172,14 @@ zipp = ">=0.5"
 docs = ["sphinx", "rst.linker"]
 testing = ["packaging", "pep517", "importlib-resources (>=1.3)"]
 
+[[package]]
+category = "dev"
+description = "iniconfig: brain-dead simple config-ini parsing"
+name = "iniconfig"
+optional = false
+python-versions = "*"
+version = "1.0.1"
+
 [[package]]
 category = "main"
 description = "Various helpers to pass data to untrusted environments and back."
@@ -173,6 +221,14 @@ optional = false
 python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*"
 version = "1.1.1"
 
+[[package]]
+category = "main"
+description = "An implementation of time.monotonic() for Python 2 & < 3.3"
+name = "monotonic"
+optional = false
+python-versions = "*"
+version = "1.5"
+
 [[package]]
 category = "dev"
 description = "More routines for operating on iterables, beyond itertools"
@@ -242,14 +298,28 @@ description = "PyInstaller bundles a Python application and all its dependencies
 marker = "sys_platform == \"darwin\""
 name = "pyinstaller"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "3.6"
+python-versions = "*"
+version = "4.0"
 
 [package.dependencies]
 altgraph = "*"
-dis3 = "*"
+macholib = ">=1.8"
+pyinstaller-hooks-contrib = ">=2020.6"
 setuptools = "*"
 
+[package.extras]
+encryption = ["tinyaes (>=1.0.0)"]
+hook_testing = ["pytest (>=2.7.3)", "execnet (>=1.5.0)", "psutil"]
+
+[[package]]
+category = "dev"
+description = "Community maintained hooks for PyInstaller"
+marker = "sys_platform == \"darwin\""
+name = "pyinstaller-hooks-contrib"
+optional = false
+python-versions = "*"
+version = "2020.7"
+
 [[package]]
 category = "dev"
 description = "Python parsing module"
@@ -291,24 +361,25 @@ description = "pytest: simple powerful testing with Python"
 name = "pytest"
 optional = false
 python-versions = ">=3.5"
-version = "5.4.3"
+version = "6.0.1"
 
 [package.dependencies]
 atomicwrites = ">=1.0"
 attrs = ">=17.4.0"
 colorama = "*"
+iniconfig = "*"
 more-itertools = ">=4.0.0"
 packaging = "*"
 pluggy = ">=0.12,<1.0"
-py = ">=1.5.0"
-wcwidth = "*"
+py = ">=1.8.2"
+toml = "*"
 
 [package.dependencies.importlib-metadata]
 python = "<3.8"
 version = ">=0.12"
 
 [package.extras]
-checkqa-mypy = ["mypy (v0.761)"]
+checkqa_mypy = ["mypy (0.780)"]
 testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "requests", "xmlschema"]
 
 [[package]]
@@ -337,6 +408,37 @@ pytest = ">=3.0.0"
 dev = ["pre-commit", "tox"]
 doc = ["sphinx", "sphinx-rtd-theme"]
 
+[[package]]
+category = "main"
+description = "Engine.IO server"
+name = "python-engineio"
+optional = false
+python-versions = "*"
+version = "3.13.2"
+
+[package.dependencies]
+six = ">=1.9.0"
+
+[package.extras]
+asyncio_client = ["aiohttp (>=3.4)"]
+client = ["requests (>=2.21.0)", "websocket-client (>=0.54.0)"]
+
+[[package]]
+category = "main"
+description = "Socket.IO server"
+name = "python-socketio"
+optional = false
+python-versions = "*"
+version = "4.6.0"
+
+[package.dependencies]
+python-engineio = ">=3.13.0"
+six = ">=1.9.0"
+
+[package.extras]
+asyncio_client = ["aiohttp (>=3.4)", "websockets (>=7.0)"]
+client = ["requests (>=2.21.0)", "websocket-client (>=0.54.0)"]
+
 [[package]]
 category = "main"
 description = "QR Code image generator"
@@ -389,27 +491,27 @@ optional = false
 python-versions = "*"
 version = "1.8.0"
 
+[[package]]
+category = "dev"
+description = "Python Library for Tom's Obvious, Minimal Language"
+name = "toml"
+optional = false
+python-versions = "*"
+version = "0.10.1"
+
 [[package]]
 category = "main"
 description = "HTTP library with thread-safe connection pooling, file post, and more."
 name = "urllib3"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, <4"
-version = "1.25.9"
+version = "1.25.10"
 
 [package.extras]
 brotli = ["brotlipy (>=0.6.0)"]
 secure = ["certifi", "cryptography (>=1.3.4)", "idna (>=2.0.0)", "pyOpenSSL (>=0.14)", "ipaddress"]
 socks = ["PySocks (>=1.5.6,<1.5.7 || >1.5.7,<2.0)"]
 
-[[package]]
-category = "dev"
-description = "Measures the displayed width of unicode strings in a terminal"
-name = "wcwidth"
-optional = false
-python-versions = "*"
-version = "0.2.5"
-
 [[package]]
 category = "main"
 description = "The comprehensive WSGI web application library."
@@ -436,7 +538,8 @@ docs = ["sphinx", "jaraco.packaging (>=3.2)", "rst.linker (>=1.9)"]
 testing = ["jaraco.itertools", "func-timeout"]
 
 [metadata]
-content-hash = "71c32a60a36f2e66745f800f5cab96e8d2551f5959acc8b07aa9003d6f3f702b"
+content-hash = "de18641607a5f3bf11a3051b84eb8a02d4263f435f3554c1aa5860136011cbf3"
+lock-version = "1.0"
 python-versions = "^3.7"
 
 [metadata.files]
@@ -468,10 +571,13 @@ colorama = [
     {file = "colorama-0.4.3-py2.py3-none-any.whl", hash = "sha256:7d73d2a99753107a36ac6b455ee49046802e59d9d076ef8e47b61499fa29afff"},
     {file = "colorama-0.4.3.tar.gz", hash = "sha256:e96da0d330793e2cb9485e9ddfd918d456036c7149416295932478192f4436a1"},
 ]
-dis3 = [
-    {file = "dis3-0.1.3-py2-none-any.whl", hash = "sha256:61f7720dd0d8749d23fda3d7227ce74d73da11c2fade993a67ab2f9852451b14"},
-    {file = "dis3-0.1.3-py3-none-any.whl", hash = "sha256:30b6412d33d738663e8ded781b138f4b01116437f0872aa56aa3adba6aeff218"},
-    {file = "dis3-0.1.3.tar.gz", hash = "sha256:9259b881fc1df02ed12ac25f82d4a85b44241854330b1a651e40e0c675cb2d1e"},
+dnspython = [
+    {file = "dnspython-2.0.0-py3-none-any.whl", hash = "sha256:40bb3c24b9d4ec12500f0124288a65df232a3aa749bb0c39734b782873a2544d"},
+    {file = "dnspython-2.0.0.zip", hash = "sha256:044af09374469c3a39eeea1a146e8cac27daec951f1f1f157b1962fc7cb9d1b7"},
+]
+eventlet = [
+    {file = "eventlet-0.25.2-py2.py3-none-any.whl", hash = "sha256:955f2cf538829bfcb7b3aa885ace40e8ae5965dcd5b876c384d0c5869702db1d"},
+    {file = "eventlet-0.25.2.tar.gz", hash = "sha256:4c8ab42c51bff55204fef43cff32616558bedbc7538d876bb6a96ce820c7f9ed"},
 ]
 flask = [
     {file = "Flask-1.1.2-py2.py3-none-any.whl", hash = "sha256:8a4fdd8936eba2512e9c85df320a37e694c93945b33ef33c89946a340a238557"},
@@ -481,9 +587,32 @@ flask-httpauth = [
     {file = "Flask-HTTPAuth-4.1.0.tar.gz", hash = "sha256:9e028e4375039a49031eb9ecc40be4761f0540476040f6eff329a31dabd4d000"},
     {file = "Flask_HTTPAuth-4.1.0-py2.py3-none-any.whl", hash = "sha256:29e0288869a213c7387f0323b6bf2c7191584fb1da8aa024d9af118e5cd70de7"},
 ]
+flask-socketio = [
+    {file = "Flask-SocketIO-4.3.1.tar.gz", hash = "sha256:36c1d5765010d1f4e4f05b4cc9c20c289d9dc70698c88d1addd0afcfedc5b062"},
+    {file = "Flask_SocketIO-4.3.1-py2.py3-none-any.whl", hash = "sha256:3668675bf7763c5b5f56689d439f07356e89c0a52e0c9e9cd3cc08563c07b252"},
+]
 future = [
     {file = "future-0.18.2.tar.gz", hash = "sha256:b1bead90b70cf6ec3f0710ae53a525360fa360d306a86583adc6bf83a4db537d"},
 ]
+greenlet = [
+    {file = "greenlet-0.4.16-cp27-cp27m-manylinux1_x86_64.whl", hash = "sha256:80cb0380838bf4e48da6adedb0c7cd060c187bb4a75f67a5aa9ec33689b84872"},
+    {file = "greenlet-0.4.16-cp27-cp27m-win32.whl", hash = "sha256:df7de669cbf21de4b04a3ffc9920bc8426cab4c61365fa84d79bf97401a8bef7"},
+    {file = "greenlet-0.4.16-cp27-cp27m-win_amd64.whl", hash = "sha256:1429dc183b36ec972055e13250d96e174491559433eb3061691b446899b87384"},
+    {file = "greenlet-0.4.16-cp27-cp27mu-manylinux1_x86_64.whl", hash = "sha256:5ea034d040e6ab1d2ae04ab05a3f37dbd719c4dee3804b13903d4cc794b1336e"},
+    {file = "greenlet-0.4.16-cp35-cp35m-manylinux1_x86_64.whl", hash = "sha256:c196a5394c56352e21cb7224739c6dd0075b69dd56f758505951d1d8d68cf8a9"},
+    {file = "greenlet-0.4.16-cp35-cp35m-win32.whl", hash = "sha256:1000038ba0ea9032948e2156a9c15f5686f36945e8f9906e6b8db49f358e7b52"},
+    {file = "greenlet-0.4.16-cp35-cp35m-win_amd64.whl", hash = "sha256:1b805231bfb7b2900a16638c3c8b45c694334c811f84463e52451e00c9412691"},
+    {file = "greenlet-0.4.16-cp36-cp36m-manylinux1_x86_64.whl", hash = "sha256:e5db19d4a7d41bbeb3dd89b49fc1bc7e6e515b51bbf32589c618655a0ebe0bf0"},
+    {file = "greenlet-0.4.16-cp36-cp36m-win32.whl", hash = "sha256:eac2a3f659d5f41d6bbfb6a97733bc7800ea5e906dc873732e00cebb98cec9e4"},
+    {file = "greenlet-0.4.16-cp36-cp36m-win_amd64.whl", hash = "sha256:7eed31f4efc8356e200568ba05ad645525f1fbd8674f1e5be61a493e715e3873"},
+    {file = "greenlet-0.4.16-cp37-cp37m-manylinux1_x86_64.whl", hash = "sha256:682328aa576ec393c1872615bcb877cf32d800d4a2f150e1a5dc7e56644010b1"},
+    {file = "greenlet-0.4.16-cp37-cp37m-win32.whl", hash = "sha256:3a35e33902b2e6079949feed7a2dafa5ac6f019da97bd255842bb22de3c11bf5"},
+    {file = "greenlet-0.4.16-cp37-cp37m-win_amd64.whl", hash = "sha256:b0b2a984bbfc543d144d88caad6cc7ff4a71be77102014bd617bd88cfb038727"},
+    {file = "greenlet-0.4.16-cp38-cp38-manylinux1_x86_64.whl", hash = "sha256:d83c1d38658b0f81c282b41238092ed89d8f93c6e342224ab73fb39e16848721"},
+    {file = "greenlet-0.4.16-cp38-cp38-win32.whl", hash = "sha256:e695ac8c3efe124d998230b219eb51afb6ef10524a50b3c45109c4b77a8a3a92"},
+    {file = "greenlet-0.4.16-cp38-cp38-win_amd64.whl", hash = "sha256:133ba06bad4e5f2f8bf6a0ac434e0fd686df749a86b3478903b92ec3a9c0c90b"},
+    {file = "greenlet-0.4.16.tar.gz", hash = "sha256:6e06eac722676797e8fce4adb8ad3dc57a1bb3adfb0dd3fdf8306c055a38456c"},
+]
 idna = [
     {file = "idna-2.10-py2.py3-none-any.whl", hash = "sha256:b97d804b1e9b523befed77c48dacec60e6dcb0b5391d57af6a65a312a90648c0"},
     {file = "idna-2.10.tar.gz", hash = "sha256:b307872f855b18632ce0c21c5e45be78c0ea7ae4c15c828c20788b26921eb3f6"},
@@ -492,6 +621,10 @@ importlib-metadata = [
     {file = "importlib_metadata-1.7.0-py2.py3-none-any.whl", hash = "sha256:dc15b2969b4ce36305c51eebe62d418ac7791e9a157911d58bfb1f9ccd8e2070"},
     {file = "importlib_metadata-1.7.0.tar.gz", hash = "sha256:90bb658cdbbf6d1735b6341ce708fc7024a3e14e99ffdc5783edea9f9b077f83"},
 ]
+iniconfig = [
+    {file = "iniconfig-1.0.1-py3-none-any.whl", hash = "sha256:80cf40c597eb564e86346103f609d74efce0f6b4d4f30ec8ce9e2c26411ba437"},
+    {file = "iniconfig-1.0.1.tar.gz", hash = "sha256:e5f92f89355a67de0595932a6c6c02ab4afddc6fcdc0bfc5becd0d60884d3f69"},
+]
 itsdangerous = [
     {file = "itsdangerous-1.1.0-py2.py3-none-any.whl", hash = "sha256:b12271b2047cb23eeb98c8b5622e2e5c5e9abd9784a153e9d8ef9cb4dd09d749"},
     {file = "itsdangerous-1.1.0.tar.gz", hash = "sha256:321b033d07f2a4136d3ec762eac9f16a10ccd60f53c0c91af90217ace7ba1f19"},
@@ -539,6 +672,10 @@ markupsafe = [
     {file = "MarkupSafe-1.1.1-cp38-cp38-win_amd64.whl", hash = "sha256:e8313f01ba26fbbe36c7be1966a7b7424942f670f38e666995b88d012765b9be"},
     {file = "MarkupSafe-1.1.1.tar.gz", hash = "sha256:29872e92839765e546828bb7754a68c418d927cd064fd4708fab9fe9c8bb116b"},
 ]
+monotonic = [
+    {file = "monotonic-1.5-py2.py3-none-any.whl", hash = "sha256:552a91f381532e33cbd07c6a2655a21908088962bb8fa7239ecbcc6ad1140cc7"},
+    {file = "monotonic-1.5.tar.gz", hash = "sha256:23953d55076df038541e648a53676fb24980f7a1be290cdda21300b3bc21dfb0"},
+]
 more-itertools = [
     {file = "more-itertools-8.4.0.tar.gz", hash = "sha256:68c70cc7167bdf5c7c9d8f6954a7837089c6a36bf565383919bb595efb8a17e5"},
     {file = "more_itertools-8.4.0-py3-none-any.whl", hash = "sha256:b78134b2063dd214000685165d81c154522c3ee0a1c0d4d113c80361c234c5a2"},
@@ -591,7 +728,11 @@ pycryptodome = [
     {file = "pycryptodome-3.9.8.tar.gz", hash = "sha256:0e24171cf01021bc5dc17d6a9d4f33a048f09d62cc3f62541e95ef104588bda4"},
 ]
 pyinstaller = [
-    {file = "PyInstaller-3.6.tar.gz", hash = "sha256:3730fa80d088f8bb7084d32480eb87cbb4ddb64123363763cf8f2a1378c1c4b7"},
+    {file = "pyinstaller-4.0.tar.gz", hash = "sha256:970beb07115761d5e4ec317c1351b712fd90ae7f23994db914c633281f99bab0"},
+]
+pyinstaller-hooks-contrib = [
+    {file = "pyinstaller-hooks-contrib-2020.7.tar.gz", hash = "sha256:74936d044f319cd7a9dca322b46a818fcb6e2af1c67af62e8a6a3121eb2863d2"},
+    {file = "pyinstaller_hooks_contrib-2020.7-py2.py3-none-any.whl", hash = "sha256:5b6e06ba6072499189f5b8e1623d5f0414962941aac370ee4f842de25455be5b"},
 ]
 pyparsing = [
     {file = "pyparsing-2.4.7-py2.py3-none-any.whl", hash = "sha256:ef9d7589ef3c200abe66653d3f1ab1033c3c419ae9b9bdb1240a85b024efc88b"},
@@ -629,8 +770,8 @@ pysocks = [
     {file = "PySocks-1.7.1.tar.gz", hash = "sha256:3f8804571ebe159c380ac6de37643bb4685970655d3bba243530d6558b799aa0"},
 ]
 pytest = [
-    {file = "pytest-5.4.3-py3-none-any.whl", hash = "sha256:5c0db86b698e8f170ba4582a492248919255fcd4c79b1ee64ace34301fb589a1"},
-    {file = "pytest-5.4.3.tar.gz", hash = "sha256:7979331bfcba207414f5e1263b5a0f8f521d0f457318836a7355531ed1a4c7d8"},
+    {file = "pytest-6.0.1-py3-none-any.whl", hash = "sha256:8b6007800c53fdacd5a5c192203f4e531eb2a1540ad9c752e052ec0f7143dbad"},
+    {file = "pytest-6.0.1.tar.gz", hash = "sha256:85228d75db9f45e06e57ef9bf4429267f81ac7c0d742cc9ed63d09886a9fe6f4"},
 ]
 pytest-faulthandler = [
     {file = "pytest-faulthandler-2.0.1.tar.gz", hash = "sha256:ed72bbce87ac344da81eb7d882196a457d4a1026a3da4a57154dacd85cd71ae5"},
@@ -640,6 +781,14 @@ pytest-qt = [
     {file = "pytest-qt-3.3.0.tar.gz", hash = "sha256:714b0bf86c5313413f2d300ac613515db3a1aef595051ab8ba2ffe619dbe8925"},
     {file = "pytest_qt-3.3.0-py2.py3-none-any.whl", hash = "sha256:5f8928288f50489d83f5d38caf2d7d9fcd6e7cf769947902caa4661dc7c851e3"},
 ]
+python-engineio = [
+    {file = "python-engineio-3.13.2.tar.gz", hash = "sha256:36b33c6aa702d9b6a7f527eec6387a2da1a9a24484ec2f086d76576413cef04b"},
+    {file = "python_engineio-3.13.2-py2.py3-none-any.whl", hash = "sha256:cfded18156862f94544a9f8ef37f56727df731c8552d7023f5afee8369be2db6"},
+]
+python-socketio = [
+    {file = "python-socketio-4.6.0.tar.gz", hash = "sha256:358d8fbbc029c4538ea25bcaa283e47f375be0017fcba829de8a3a731c9df25a"},
+    {file = "python_socketio-4.6.0-py2.py3-none-any.whl", hash = "sha256:d437f797c44b6efba2f201867cf02b8c96b97dff26d4e4281ac08b45817cd522"},
+]
 qrcode = [
     {file = "qrcode-6.1-py2.py3-none-any.whl", hash = "sha256:3996ee560fc39532910603704c82980ff6d4d5d629f9c3f25f34174ce8606cf5"},
     {file = "qrcode-6.1.tar.gz", hash = "sha256:505253854f607f2abf4d16092c61d4e9d511a3b4392e60bff957a68592b04369"},
@@ -655,13 +804,13 @@ six = [
 stem = [
     {file = "stem-1.8.0.tar.gz", hash = "sha256:a0b48ea6224e95f22aa34c0bc3415f0eb4667ddeae3dfb5e32a6920c185568c2"},
 ]
-urllib3 = [
-    {file = "urllib3-1.25.9-py2.py3-none-any.whl", hash = "sha256:88206b0eb87e6d677d424843ac5209e3fb9d0190d0ee169599165ec25e9d9115"},
-    {file = "urllib3-1.25.9.tar.gz", hash = "sha256:3018294ebefce6572a474f0604c2021e33b3fd8006ecd11d62107a5d2a963527"},
+toml = [
+    {file = "toml-0.10.1-py2.py3-none-any.whl", hash = "sha256:bda89d5935c2eac546d648028b9901107a595863cb36bae0c73ac804a9b4ce88"},
+    {file = "toml-0.10.1.tar.gz", hash = "sha256:926b612be1e5ce0634a2ca03470f95169cf16f939018233a670519cb4ac58b0f"},
 ]
-wcwidth = [
-    {file = "wcwidth-0.2.5-py2.py3-none-any.whl", hash = "sha256:beb4802a9cebb9144e99086eff703a642a13d6a0052920003a230f3294bbe784"},
-    {file = "wcwidth-0.2.5.tar.gz", hash = "sha256:c4d647b99872929fdb7bdcaa4fbe7f01413ed3d98077df798530e5b04f116c83"},
+urllib3 = [
+    {file = "urllib3-1.25.10-py2.py3-none-any.whl", hash = "sha256:e7983572181f5e1522d9c98453462384ee92a0be7fac5f1413a1e35c56cc0461"},
+    {file = "urllib3-1.25.10.tar.gz", hash = "sha256:91056c15fa70756691db97756772bb1eb9678fa585d9184f24534b100dc60f4a"},
 ]
 werkzeug = [
     {file = "Werkzeug-1.0.1-py2.py3-none-any.whl", hash = "sha256:2de2a5db0baeae7b2d2664949077c2ac63fbd16d98da0ff71837f7d1dea3fd43"},
diff --git a/pyproject.toml b/pyproject.toml
index 029297c0..cc2d9bc4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,6 +28,8 @@ requests = "*"
 stem = "*"
 urllib3 = "*"
 Werkzeug = "*"
+flask-socketio = "^4.3.0"
+eventlet = "^0.25.2"
 qrcode = "^6.1"
 
 [tool.poetry.dev-dependencies]
diff --git a/share/locale/en.json b/share/locale/en.json
index 4e67555e..ab7e92aa 100644
--- a/share/locale/en.json
+++ b/share/locale/en.json
@@ -17,6 +17,9 @@
     "gui_share_start_server": "Start sharing",
     "gui_share_stop_server": "Stop sharing",
     "gui_share_stop_server_autostop_timer": "Stop Sharing ({})",
+    "gui_chat_stop_server_autostop_timer": "Stop Chat Server ({})",
+    "gui_chat_start_server": "Start chat server",
+    "gui_chat_stop_server": "Stop chat server",
     "gui_stop_server_autostop_timer_tooltip": "Auto-stop timer ends at {}",
     "gui_start_server_autostart_timer_tooltip": "Auto-start timer ends at {}",
     "gui_receive_start_server": "Start Receive Mode",
@@ -187,6 +190,8 @@
     "gui_new_tab_receive_description": "Turn your computer into an online dropbox. People will be able to use Tor Browser to send files to your computer.",
     "gui_new_tab_website_button": "Publish Website",
     "gui_new_tab_website_description": "Host a static HTML onion website from your computer.",
+    "gui_new_tab_chat_button": "Start Chat Server",
+    "gui_new_tab_chat_description": "Start an onion chat server and use it to chat in Tor Browser.",
     "gui_close_tab_warning_title": "Are you sure?",
     "gui_close_tab_warning_persistent_description": "This tab is persistent. If you close it you'll lose the onion address that it's using. Are you sure you want to close it?",
     "gui_close_tab_warning_share_description": "You're in the process of sending files. Are you sure you want to close this tab?",
diff --git a/share/static/css/style.css b/share/static/css/style.css
index 3747d208..ec53e8c1 100644
--- a/share/static/css/style.css
+++ b/share/static/css/style.css
@@ -167,6 +167,67 @@ ul.breadcrumbs li a:link, ul.breadcrumbs li a:visited {
   }
 }
 
+.chat-container {
+  display: flex;
+}
+
+.chat-users {
+  width: 20%;
+  border: 1px solid rgba(0, 0, 0, 0.1);
+  border-radius: 2px;
+  overflow: auto;
+  background: #f2f2f2;
+}
+
+.chat-users .editable-username {
+  display: flex;
+  padding: 1rem;
+  flex-direction: column;
+}
+
+.chat-users #user-list li {
+  margin-bottom: 1em;
+}
+
+.chat-wrapper {
+  display: flex;
+  flex-direction: column;
+  flex: 1;
+  margin: 0 1rem;
+  height: calc(100vh - (45px + 2em));
+}
+
+.chat-wrapper #chat {
+  border: 1px solid rgba(0, 0, 0, 0.1);
+  border-radius: 2px;
+  flex: 1;
+  overflow: auto;
+  background: #f2f2f2;
+  padding: 0 1rem;
+}
+
+.chat-wrapper .chat-form {
+  display: flex;
+}
+
+.chat-wrapper input#new-message {
+  height: 100%;
+}
+
+@media (max-width: 992px) {
+  .chat-users .editable-username {
+    display: block;
+  }
+
+  .chat-users input#username {
+    width: 90%;
+  }
+}
+
+.no-js {
+  display: none;
+}
+
 .upload-wrapper {
   align-items: center;
   justify-content: center;
diff --git a/share/static/js/chat.js b/share/static/js/chat.js
new file mode 100644
index 00000000..8bbcc8ec
--- /dev/null
+++ b/share/static/js/chat.js
@@ -0,0 +1,160 @@
+$(function(){
+  $(document).ready(function(){
+    $('.chat-container').removeClass('no-js');
+    var socket = io.connect('http://' + document.domain + ':' + location.port + '/chat');
+
+    // Store current username received from app context
+    var current_username = $('#username').val();
+
+    // On browser connect, emit a socket event to be added to 
+    // room and assigned random username
+    socket.on('connect', function() {
+      socket.emit('joined', {});
+    });
+
+    // Triggered on any status change by any user, such as some
+    // user joined, or changed username, or left, etc.
+    socket.on('status', function(data) {
+      addMessageToRoom(data, current_username, 'status');
+    });
+
+    // Triggered when message is received from a user. Even when sent
+    // by self, it get triggered after the server sends back the emit.
+    socket.on('message', function(data) {
+      addMessageToRoom(data, current_username, 'chat');
+    });
+
+    // Triggered when disconnected either by server stop or timeout
+    socket.on('disconnect', function(data) {
+      addMessageToRoom({'msg': 'The chat server is disconnected.'}, current_username, 'status');
+    })
+    socket.on('connect_error', function(error) {
+      console.log("error");
+    })
+
+    // Trigger new message on enter or click of send message button.
+    $('#new-message').on('keypress', function(e) {
+      var code = e.keyCode || e.which;
+      if (code == 13) {
+        emitMessage(socket);
+      }
+    });
+    $('#send-button').on('click', function(e) {
+      emitMessage(socket);
+    });
+
+    // Keep buttons disabled unless changed or not empty
+    $('#username').on('keyup',function(event) {
+      if ($('#username').val() !== '' && $('#username').val() !== current_username) {
+        $('#update-username').removeAttr('disabled');
+        if (event.keyCode == 13) {
+          current_username = updateUsername(socket);
+        }
+      } else {
+        $('#update-username').attr('disabled', true);
+      }
+    });
+
+    // Update username
+    $('#update-username').on('click', function() {
+      current_username = updateUsername(socket);
+    });
+
+    // Show warning of losing data
+    $(window).on('beforeunload', function (e) {
+      e.preventDefault();
+      e.returnValue = '';
+      return '';
+    });
+  });
+});
+
+var addMessageToRoom = function(data, current_username, messageType) {
+  var scrollDiff = getScrollDiffBefore();
+  if (messageType === 'status') {
+    addStatusMessage(data.msg);
+    if (data.connected_users) {
+      addUserList(data.connected_users, current_username);
+    }
+  } else if (messageType === 'chat') {
+    addChatMessage(data.msg)
+  }
+  scrollBottomMaybe(scrollDiff);
+}
+
+var emitMessage = function(socket) {
+  var text = $('#new-message').val();
+  $('#new-message').val('');
+  $('#chat').scrollTop($('#chat')[0].scrollHeight);
+  socket.emit('text', {msg: text});
+}
+
+var updateUsername = function(socket) {
+  var username = $('#username').val();
+  socket.emit('update_username', {username: username});
+  $.ajax({
+    method: 'POST',
+    url: `http://${document.domain}:${location.port}/update-session-username`,
+    contentType: 'application/json',
+    dataType: 'json',
+    data: JSON.stringify({'username': username})
+  }).done(function(response) {
+    console.log(response);
+  });
+  $('#update-username').attr('disabled', true);
+  return username;
+}
+
+/************************************/
+/********* Util Functions ***********/
+/************************************/
+
+var createUserListHTML = function(connected_users, current_user) {
+  var userListHTML = '';
+  connected_users.sort();
+  connected_users.forEach(function(username) {
+    if (username !== current_user) {
+      userListHTML += `<li>${sanitizeHTML(username)}</li>`;
+    }
+  });
+  return userListHTML;
+}
+
+var getScrollDiffBefore = function() {
+  return $('#chat').scrollTop() - ($('#chat')[0].scrollHeight - $('#chat')[0].offsetHeight);
+}
+
+var scrollBottomMaybe = function(scrollDiff) {
+  // Scrolls to bottom if the user is scrolled at bottom
+  // if the user has scrolled upp, it wont scroll at bottom.
+  // Note: when a user themselves send a message, it will still
+  // scroll to the bottom even if they had scrolled up before.
+  if (scrollDiff > 0) {
+    $('#chat').scrollTop($('#chat')[0].scrollHeight);
+  }
+}
+
+var addStatusMessage = function(message) {
+  $('#chat').append(
+    `<p><small><i>${sanitizeHTML(message)}</i></small></p>`
+  );
+}
+
+var addChatMessage = function(message) {
+  $('#chat').append(`<p>${sanitizeHTML(message)}</p>`);
+}
+
+var addUserList = function(connected_users, current_username) {
+  $('#user-list').html(
+    createUserListHTML(
+      connected_users,
+      current_username
+    )
+  );
+}
+
+var sanitizeHTML = function(str) {
+	var temp = document.createElement('span');
+	temp.textContent = str;
+	return temp.innerHTML;
+};
diff --git a/share/static/js/socket.io.min.js b/share/static/js/socket.io.min.js
new file mode 100644
index 00000000..b622e1b9
--- /dev/null
+++ b/share/static/js/socket.io.min.js
@@ -0,0 +1,3 @@
+!function(t){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=t();else if("function"==typeof define&&define.amd)define([],t);else{var e;"undefined"!=typeof window?e=window:"undefined"!=typeof global?e=global:"undefined"!=typeof self&&(e=self),e.io=t()}}(function(){var t;return function e(t,n,r){function o(s,a){if(!n[s]){if(!t[s]){var c="function"==typeof require&&require;if(!a&&c)return c(s,!0);if(i)return i(s,!0);throw new Error("Cannot find module '"+s+"'")}var p=n[s]={exports:{}};t[s][0].call(p.exports,function(e){var n=t[s][1][e];return o(n?n:e)},p,p.exports,e,t,n,r)}return n[s].exports}for(var i="function"==typeof require&&require,s=0;s<r.length;s++)o(r[s]);return o}({1:[function(t,e){e.exports=t("./lib/")},{"./lib/":2}],2:[function(t,e,n){function r(t,e){"object"==typeof t&&(e=t,t=void 0),e=e||{};var n,r=o(t),i=r.source,p=r.id;return e.forceNew||e["force new connection"]||!1===e.multiplex?(a("ignoring socket cache for %s",i),n=s(i,e)):(c[p]||(a("new io instance for %s",i),c[p]=s(i,e)),n=c[p]),n.socket(r.path)}var o=t("./url"),i=t("socket.io-parser"),s=t("./manager"),a=t("debug")("socket.io-client");e.exports=n=r;var c=n.managers={};n.protocol=i.protocol,n.connect=r,n.Manager=t("./manager"),n.Socket=t("./socket")},{"./manager":3,"./socket":5,"./url":6,debug:10,"socket.io-parser":46}],3:[function(t,e){function n(t,e){return this instanceof n?(t&&"object"==typeof t&&(e=t,t=void 0),e=e||{},e.path=e.path||"/socket.io",this.nsps={},this.subs=[],this.opts=e,this.reconnection(e.reconnection!==!1),this.reconnectionAttempts(e.reconnectionAttempts||1/0),this.reconnectionDelay(e.reconnectionDelay||1e3),this.reconnectionDelayMax(e.reconnectionDelayMax||5e3),this.randomizationFactor(e.randomizationFactor||.5),this.backoff=new f({min:this.reconnectionDelay(),max:this.reconnectionDelayMax(),jitter:this.randomizationFactor()}),this.timeout(null==e.timeout?2e4:e.timeout),this.readyState="closed",this.uri=t,this.connected=[],this.encoding=!1,this.packetBuffer=[],this.encoder=new s.Encoder,this.decoder=new s.Decoder,this.autoConnect=e.autoConnect!==!1,void(this.autoConnect&&this.open())):new n(t,e)}var r=(t("./url"),t("engine.io-client")),o=t("./socket"),i=t("component-emitter"),s=t("socket.io-parser"),a=t("./on"),c=t("component-bind"),p=(t("object-component"),t("debug")("socket.io-client:manager")),u=t("indexof"),f=t("backo2");e.exports=n,n.prototype.emitAll=function(){this.emit.apply(this,arguments);for(var t in this.nsps)this.nsps[t].emit.apply(this.nsps[t],arguments)},n.prototype.updateSocketIds=function(){for(var t in this.nsps)this.nsps[t].id=this.engine.id},i(n.prototype),n.prototype.reconnection=function(t){return arguments.length?(this._reconnection=!!t,this):this._reconnection},n.prototype.reconnectionAttempts=function(t){return arguments.length?(this._reconnectionAttempts=t,this):this._reconnectionAttempts},n.prototype.reconnectionDelay=function(t){return arguments.length?(this._reconnectionDelay=t,this.backoff&&this.backoff.setMin(t),this):this._reconnectionDelay},n.prototype.randomizationFactor=function(t){return arguments.length?(this._randomizationFactor=t,this.backoff&&this.backoff.setJitter(t),this):this._randomizationFactor},n.prototype.reconnectionDelayMax=function(t){return arguments.length?(this._reconnectionDelayMax=t,this.backoff&&this.backoff.setMax(t),this):this._reconnectionDelayMax},n.prototype.timeout=function(t){return arguments.length?(this._timeout=t,this):this._timeout},n.prototype.maybeReconnectOnOpen=function(){!this.reconnecting&&this._reconnection&&0===this.backoff.attempts&&this.reconnect()},n.prototype.open=n.prototype.connect=function(t){if(p("readyState %s",this.readyState),~this.readyState.indexOf("open"))return this;p("opening %s",this.uri),this.engine=r(this.uri,this.opts);var e=this.engine,n=this;this.readyState="opening",this.skipReconnect=!1;var o=a(e,"open",function(){n.onopen(),t&&t()}),i=a(e,"error",function(e){if(p("connect_error"),n.cleanup(),n.readyState="closed",n.emitAll("connect_error",e),t){var r=new Error("Connection error");r.data=e,t(r)}else n.maybeReconnectOnOpen()});if(!1!==this._timeout){var s=this._timeout;p("connect attempt will timeout after %d",s);var c=setTimeout(function(){p("connect attempt timed out after %d",s),o.destroy(),e.close(),e.emit("error","timeout"),n.emitAll("connect_timeout",s)},s);this.subs.push({destroy:function(){clearTimeout(c)}})}return this.subs.push(o),this.subs.push(i),this},n.prototype.onopen=function(){p("open"),this.cleanup(),this.readyState="open",this.emit("open");var t=this.engine;this.subs.push(a(t,"data",c(this,"ondata"))),this.subs.push(a(this.decoder,"decoded",c(this,"ondecoded"))),this.subs.push(a(t,"error",c(this,"onerror"))),this.subs.push(a(t,"close",c(this,"onclose")))},n.prototype.ondata=function(t){this.decoder.add(t)},n.prototype.ondecoded=function(t){this.emit("packet",t)},n.prototype.onerror=function(t){p("error",t),this.emitAll("error",t)},n.prototype.socket=function(t){var e=this.nsps[t];if(!e){e=new o(this,t),this.nsps[t]=e;var n=this;e.on("connect",function(){e.id=n.engine.id,~u(n.connected,e)||n.connected.push(e)})}return e},n.prototype.destroy=function(t){var e=u(this.connected,t);~e&&this.connected.splice(e,1),this.connected.length||this.close()},n.prototype.packet=function(t){p("writing packet %j",t);var e=this;e.encoding?e.packetBuffer.push(t):(e.encoding=!0,this.encoder.encode(t,function(t){for(var n=0;n<t.length;n++)e.engine.write(t[n]);e.encoding=!1,e.processPacketQueue()}))},n.prototype.processPacketQueue=function(){if(this.packetBuffer.length>0&&!this.encoding){var t=this.packetBuffer.shift();this.packet(t)}},n.prototype.cleanup=function(){for(var t;t=this.subs.shift();)t.destroy();this.packetBuffer=[],this.encoding=!1,this.decoder.destroy()},n.prototype.close=n.prototype.disconnect=function(){this.skipReconnect=!0,this.backoff.reset(),this.readyState="closed",this.engine&&this.engine.close()},n.prototype.onclose=function(t){p("close"),this.cleanup(),this.backoff.reset(),this.readyState="closed",this.emit("close",t),this._reconnection&&!this.skipReconnect&&this.reconnect()},n.prototype.reconnect=function(){if(this.reconnecting||this.skipReconnect)return this;var t=this;if(this.backoff.attempts>=this._reconnectionAttempts)p("reconnect failed"),this.backoff.reset(),this.emitAll("reconnect_failed"),this.reconnecting=!1;else{var e=this.backoff.duration();p("will wait %dms before reconnect attempt",e),this.reconnecting=!0;var n=setTimeout(function(){t.skipReconnect||(p("attempting reconnect"),t.emitAll("reconnect_attempt",t.backoff.attempts),t.emitAll("reconnecting",t.backoff.attempts),t.skipReconnect||t.open(function(e){e?(p("reconnect attempt error"),t.reconnecting=!1,t.reconnect(),t.emitAll("reconnect_error",e.data)):(p("reconnect success"),t.onreconnect())}))},e);this.subs.push({destroy:function(){clearTimeout(n)}})}},n.prototype.onreconnect=function(){var t=this.backoff.attempts;this.reconnecting=!1,this.backoff.reset(),this.updateSocketIds(),this.emitAll("reconnect",t)}},{"./on":4,"./socket":5,"./url":6,backo2:7,"component-bind":8,"component-emitter":9,debug:10,"engine.io-client":11,indexof:42,"object-component":43,"socket.io-parser":46}],4:[function(t,e){function n(t,e,n){return t.on(e,n),{destroy:function(){t.removeListener(e,n)}}}e.exports=n},{}],5:[function(t,e,n){function r(t,e){this.io=t,this.nsp=e,this.json=this,this.ids=0,this.acks={},this.io.autoConnect&&this.open(),this.receiveBuffer=[],this.sendBuffer=[],this.connected=!1,this.disconnected=!0}var o=t("socket.io-parser"),i=t("component-emitter"),s=t("to-array"),a=t("./on"),c=t("component-bind"),p=t("debug")("socket.io-client:socket"),u=t("has-binary");e.exports=n=r;var f={connect:1,connect_error:1,connect_timeout:1,disconnect:1,error:1,reconnect:1,reconnect_attempt:1,reconnect_failed:1,reconnect_error:1,reconnecting:1},h=i.prototype.emit;i(r.prototype),r.prototype.subEvents=function(){if(!this.subs){var t=this.io;this.subs=[a(t,"open",c(this,"onopen")),a(t,"packet",c(this,"onpacket")),a(t,"close",c(this,"onclose"))]}},r.prototype.open=r.prototype.connect=function(){return this.connected?this:(this.subEvents(),this.io.open(),"open"==this.io.readyState&&this.onopen(),this)},r.prototype.send=function(){var t=s(arguments);return t.unshift("message"),this.emit.apply(this,t),this},r.prototype.emit=function(t){if(f.hasOwnProperty(t))return h.apply(this,arguments),this;var e=s(arguments),n=o.EVENT;u(e)&&(n=o.BINARY_EVENT);var r={type:n,data:e};return"function"==typeof e[e.length-1]&&(p("emitting packet with ack id %d",this.ids),this.acks[this.ids]=e.pop(),r.id=this.ids++),this.connected?this.packet(r):this.sendBuffer.push(r),this},r.prototype.packet=function(t){t.nsp=this.nsp,this.io.packet(t)},r.prototype.onopen=function(){p("transport is open - connecting"),"/"!=this.nsp&&this.packet({type:o.CONNECT})},r.prototype.onclose=function(t){p("close (%s)",t),this.connected=!1,this.disconnected=!0,delete this.id,this.emit("disconnect",t)},r.prototype.onpacket=function(t){if(t.nsp==this.nsp)switch(t.type){case o.CONNECT:this.onconnect();break;case o.EVENT:this.onevent(t);break;case o.BINARY_EVENT:this.onevent(t);break;case o.ACK:this.onack(t);break;case o.BINARY_ACK:this.onack(t);break;case o.DISCONNECT:this.ondisconnect();break;case o.ERROR:this.emit("error",t.data)}},r.prototype.onevent=function(t){var e=t.data||[];p("emitting event %j",e),null!=t.id&&(p("attaching ack callback to event"),e.push(this.ack(t.id))),this.connected?h.apply(this,e):this.receiveBuffer.push(e)},r.prototype.ack=function(t){var e=this,n=!1;return function(){if(!n){n=!0;var r=s(arguments);p("sending ack %j",r);var i=u(r)?o.BINARY_ACK:o.ACK;e.packet({type:i,id:t,data:r})}}},r.prototype.onack=function(t){p("calling ack %s with %j",t.id,t.data);var e=this.acks[t.id];e.apply(this,t.data),delete this.acks[t.id]},r.prototype.onconnect=function(){this.connected=!0,this.disconnected=!1,this.emit("connect"),this.emitBuffered()},r.prototype.emitBuffered=function(){var t;for(t=0;t<this.receiveBuffer.length;t++)h.apply(this,this.receiveBuffer[t]);for(this.receiveBuffer=[],t=0;t<this.sendBuffer.length;t++)this.packet(this.sendBuffer[t]);this.sendBuffer=[]},r.prototype.ondisconnect=function(){p("server disconnect (%s)",this.nsp),this.destroy(),this.onclose("io server disconnect")},r.prototype.destroy=function(){if(this.subs){for(var t=0;t<this.subs.length;t++)this.subs[t].destroy();this.subs=null}this.io.destroy(this)},r.prototype.close=r.prototype.disconnect=function(){return this.connected&&(p("performing disconnect (%s)",this.nsp),this.packet({type:o.DISCONNECT})),this.destroy(),this.connected&&this.onclose("io client disconnect"),this}},{"./on":4,"component-bind":8,"component-emitter":9,debug:10,"has-binary":38,"socket.io-parser":46,"to-array":50}],6:[function(t,e){(function(n){function r(t,e){var r=t,e=e||n.location;return null==t&&(t=e.protocol+"//"+e.host),"string"==typeof t&&("/"==t.charAt(0)&&(t="/"==t.charAt(1)?e.protocol+t:e.hostname+t),/^(https?|wss?):\/\//.test(t)||(i("protocol-less url %s",t),t="undefined"!=typeof e?e.protocol+"//"+t:"https://"+t),i("parse %s",t),r=o(t)),r.port||(/^(http|ws)$/.test(r.protocol)?r.port="80":/^(http|ws)s$/.test(r.protocol)&&(r.port="443")),r.path=r.path||"/",r.id=r.protocol+"://"+r.host+":"+r.port,r.href=r.protocol+"://"+r.host+(e&&e.port==r.port?"":":"+r.port),r}var o=t("parseuri"),i=t("debug")("socket.io-client:url");e.exports=r}).call(this,"undefined"!=typeof self?self:"undefined"!=typeof window?window:{})},{debug:10,parseuri:44}],7:[function(t,e){function n(t){t=t||{},this.ms=t.min||100,this.max=t.max||1e4,this.factor=t.factor||2,this.jitter=t.jitter>0&&t.jitter<=1?t.jitter:0,this.attempts=0}e.exports=n,n.prototype.duration=function(){var t=this.ms*Math.pow(this.factor,this.attempts++);if(this.jitter){var e=Math.random(),n=Math.floor(e*this.jitter*t);t=0==(1&Math.floor(10*e))?t-n:t+n}return 0|Math.min(t,this.max)},n.prototype.reset=function(){this.attempts=0},n.prototype.setMin=function(t){this.ms=t},n.prototype.setMax=function(t){this.max=t},n.prototype.setJitter=function(t){this.jitter=t}},{}],8:[function(t,e){var n=[].slice;e.exports=function(t,e){if("string"==typeof e&&(e=t[e]),"function"!=typeof e)throw new Error("bind() requires a function");var r=n.call(arguments,2);return function(){return e.apply(t,r.concat(n.call(arguments)))}}},{}],9:[function(t,e){function n(t){return t?r(t):void 0}function r(t){for(var e in n.prototype)t[e]=n.prototype[e];return t}e.exports=n,n.prototype.on=n.prototype.addEventListener=function(t,e){return this._callbacks=this._callbacks||{},(this._callbacks[t]=this._callbacks[t]||[]).push(e),this},n.prototype.once=function(t,e){function n(){r.off(t,n),e.apply(this,arguments)}var r=this;return this._callbacks=this._callbacks||{},n.fn=e,this.on(t,n),this},n.prototype.off=n.prototype.removeListener=n.prototype.removeAllListeners=n.prototype.removeEventListener=function(t,e){if(this._callbacks=this._callbacks||{},0==arguments.length)return this._callbacks={},this;var n=this._callbacks[t];if(!n)return this;if(1==arguments.length)return delete this._callbacks[t],this;for(var r,o=0;o<n.length;o++)if(r=n[o],r===e||r.fn===e){n.splice(o,1);break}return this},n.prototype.emit=function(t){this._callbacks=this._callbacks||{};var e=[].slice.call(arguments,1),n=this._callbacks[t];if(n){n=n.slice(0);for(var r=0,o=n.length;o>r;++r)n[r].apply(this,e)}return this},n.prototype.listeners=function(t){return this._callbacks=this._callbacks||{},this._callbacks[t]||[]},n.prototype.hasListeners=function(t){return!!this.listeners(t).length}},{}],10:[function(t,e){function n(t){return n.enabled(t)?function(e){e=r(e);var o=new Date,i=o-(n[t]||o);n[t]=o,e=t+" "+e+" +"+n.humanize(i),window.console&&console.log&&Function.prototype.apply.call(console.log,console,arguments)}:function(){}}function r(t){return t instanceof Error?t.stack||t.message:t}e.exports=n,n.names=[],n.skips=[],n.enable=function(t){try{localStorage.debug=t}catch(e){}for(var r=(t||"").split(/[\s,]+/),o=r.length,i=0;o>i;i++)t=r[i].replace("*",".*?"),"-"===t[0]?n.skips.push(new RegExp("^"+t.substr(1)+"$")):n.names.push(new RegExp("^"+t+"$"))},n.disable=function(){n.enable("")},n.humanize=function(t){var e=1e3,n=6e4,r=60*n;return t>=r?(t/r).toFixed(1)+"h":t>=n?(t/n).toFixed(1)+"m":t>=e?(t/e|0)+"s":t+"ms"},n.enabled=function(t){for(var e=0,r=n.skips.length;r>e;e++)if(n.skips[e].test(t))return!1;for(var e=0,r=n.names.length;r>e;e++)if(n.names[e].test(t))return!0;return!1};try{window.localStorage&&n.enable(localStorage.debug)}catch(o){}},{}],11:[function(t,e){e.exports=t("./lib/")},{"./lib/":12}],12:[function(t,e){e.exports=t("./socket"),e.exports.parser=t("engine.io-parser")},{"./socket":13,"engine.io-parser":25}],13:[function(t,e){(function(n){function r(t,e){if(!(this instanceof r))return new r(t,e);if(e=e||{},t&&"object"==typeof t&&(e=t,t=null),t&&(t=u(t),e.host=t.host,e.secure="https"==t.protocol||"wss"==t.protocol,e.port=t.port,t.query&&(e.query=t.query)),this.secure=null!=e.secure?e.secure:n.location&&"https:"==location.protocol,e.host){var o=e.host.split(":");e.hostname=o.shift(),o.length?e.port=o.pop():e.port||(e.port=this.secure?"443":"80")}this.agent=e.agent||!1,this.hostname=e.hostname||(n.location?location.hostname:"localhost"),this.port=e.port||(n.location&&location.port?location.port:this.secure?443:80),this.query=e.query||{},"string"==typeof this.query&&(this.query=h.decode(this.query)),this.upgrade=!1!==e.upgrade,this.path=(e.path||"/engine.io").replace(/\/$/,"")+"/",this.forceJSONP=!!e.forceJSONP,this.jsonp=!1!==e.jsonp,this.forceBase64=!!e.forceBase64,this.enablesXDR=!!e.enablesXDR,this.timestampParam=e.timestampParam||"t",this.timestampRequests=e.timestampRequests,this.transports=e.transports||["polling","websocket"],this.readyState="",this.writeBuffer=[],this.callbackBuffer=[],this.policyPort=e.policyPort||843,this.rememberUpgrade=e.rememberUpgrade||!1,this.binaryType=null,this.onlyBinaryUpgrades=e.onlyBinaryUpgrades,this.pfx=e.pfx||null,this.key=e.key||null,this.passphrase=e.passphrase||null,this.cert=e.cert||null,this.ca=e.ca||null,this.ciphers=e.ciphers||null,this.rejectUnauthorized=e.rejectUnauthorized||null,this.open()}function o(t){var e={};for(var n in t)t.hasOwnProperty(n)&&(e[n]=t[n]);return e}var i=t("./transports"),s=t("component-emitter"),a=t("debug")("engine.io-client:socket"),c=t("indexof"),p=t("engine.io-parser"),u=t("parseuri"),f=t("parsejson"),h=t("parseqs");e.exports=r,r.priorWebsocketSuccess=!1,s(r.prototype),r.protocol=p.protocol,r.Socket=r,r.Transport=t("./transport"),r.transports=t("./transports"),r.parser=t("engine.io-parser"),r.prototype.createTransport=function(t){a('creating transport "%s"',t);var e=o(this.query);e.EIO=p.protocol,e.transport=t,this.id&&(e.sid=this.id);var n=new i[t]({agent:this.agent,hostname:this.hostname,port:this.port,secure:this.secure,path:this.path,query:e,forceJSONP:this.forceJSONP,jsonp:this.jsonp,forceBase64:this.forceBase64,enablesXDR:this.enablesXDR,timestampRequests:this.timestampRequests,timestampParam:this.timestampParam,policyPort:this.policyPort,socket:this,pfx:this.pfx,key:this.key,passphrase:this.passphrase,cert:this.cert,ca:this.ca,ciphers:this.ciphers,rejectUnauthorized:this.rejectUnauthorized});return n},r.prototype.open=function(){var t;if(this.rememberUpgrade&&r.priorWebsocketSuccess&&-1!=this.transports.indexOf("websocket"))t="websocket";else{if(0==this.transports.length){var e=this;return void setTimeout(function(){e.emit("error","No transports available")},0)}t=this.transports[0]}this.readyState="opening";var t;try{t=this.createTransport(t)}catch(n){return this.transports.shift(),void this.open()}t.open(),this.setTransport(t)},r.prototype.setTransport=function(t){a("setting transport %s",t.name);var e=this;this.transport&&(a("clearing existing transport %s",this.transport.name),this.transport.removeAllListeners()),this.transport=t,t.on("drain",function(){e.onDrain()}).on("packet",function(t){e.onPacket(t)}).on("error",function(t){e.onError(t)}).on("close",function(){e.onClose("transport close")})},r.prototype.probe=function(t){function e(){if(h.onlyBinaryUpgrades){var e=!this.supportsBinary&&h.transport.supportsBinary;f=f||e}f||(a('probe transport "%s" opened',t),u.send([{type:"ping",data:"probe"}]),u.once("packet",function(e){if(!f)if("pong"==e.type&&"probe"==e.data){if(a('probe transport "%s" pong',t),h.upgrading=!0,h.emit("upgrading",u),!u)return;r.priorWebsocketSuccess="websocket"==u.name,a('pausing current transport "%s"',h.transport.name),h.transport.pause(function(){f||"closed"!=h.readyState&&(a("changing transport and sending upgrade packet"),p(),h.setTransport(u),u.send([{type:"upgrade"}]),h.emit("upgrade",u),u=null,h.upgrading=!1,h.flush())})}else{a('probe transport "%s" failed',t);var n=new Error("probe error");n.transport=u.name,h.emit("upgradeError",n)}}))}function n(){f||(f=!0,p(),u.close(),u=null)}function o(e){var r=new Error("probe error: "+e);r.transport=u.name,n(),a('probe transport "%s" failed because of error: %s',t,e),h.emit("upgradeError",r)}function i(){o("transport closed")}function s(){o("socket closed")}function c(t){u&&t.name!=u.name&&(a('"%s" works - aborting "%s"',t.name,u.name),n())}function p(){u.removeListener("open",e),u.removeListener("error",o),u.removeListener("close",i),h.removeListener("close",s),h.removeListener("upgrading",c)}a('probing transport "%s"',t);var u=this.createTransport(t,{probe:1}),f=!1,h=this;r.priorWebsocketSuccess=!1,u.once("open",e),u.once("error",o),u.once("close",i),this.once("close",s),this.once("upgrading",c),u.open()},r.prototype.onOpen=function(){if(a("socket open"),this.readyState="open",r.priorWebsocketSuccess="websocket"==this.transport.name,this.emit("open"),this.flush(),"open"==this.readyState&&this.upgrade&&this.transport.pause){a("starting upgrade probes");for(var t=0,e=this.upgrades.length;e>t;t++)this.probe(this.upgrades[t])}},r.prototype.onPacket=function(t){if("opening"==this.readyState||"open"==this.readyState)switch(a('socket receive: type "%s", data "%s"',t.type,t.data),this.emit("packet",t),this.emit("heartbeat"),t.type){case"open":this.onHandshake(f(t.data));break;case"pong":this.setPing();break;case"error":var e=new Error("server error");e.code=t.data,this.emit("error",e);break;case"message":this.emit("data",t.data),this.emit("message",t.data)}else a('packet received with socket readyState "%s"',this.readyState)},r.prototype.onHandshake=function(t){this.emit("handshake",t),this.id=t.sid,this.transport.query.sid=t.sid,this.upgrades=this.filterUpgrades(t.upgrades),this.pingInterval=t.pingInterval,this.pingTimeout=t.pingTimeout,this.onOpen(),"closed"!=this.readyState&&(this.setPing(),this.removeListener("heartbeat",this.onHeartbeat),this.on("heartbeat",this.onHeartbeat))},r.prototype.onHeartbeat=function(t){clearTimeout(this.pingTimeoutTimer);var e=this;e.pingTimeoutTimer=setTimeout(function(){"closed"!=e.readyState&&e.onClose("ping timeout")},t||e.pingInterval+e.pingTimeout)},r.prototype.setPing=function(){var t=this;clearTimeout(t.pingIntervalTimer),t.pingIntervalTimer=setTimeout(function(){a("writing ping packet - expecting pong within %sms",t.pingTimeout),t.ping(),t.onHeartbeat(t.pingTimeout)},t.pingInterval)},r.prototype.ping=function(){this.sendPacket("ping")},r.prototype.onDrain=function(){for(var t=0;t<this.prevBufferLen;t++)this.callbackBuffer[t]&&this.callbackBuffer[t]();this.writeBuffer.splice(0,this.prevBufferLen),this.callbackBuffer.splice(0,this.prevBufferLen),this.prevBufferLen=0,0==this.writeBuffer.length?this.emit("drain"):this.flush()},r.prototype.flush=function(){"closed"!=this.readyState&&this.transport.writable&&!this.upgrading&&this.writeBuffer.length&&(a("flushing %d packets in socket",this.writeBuffer.length),this.transport.send(this.writeBuffer),this.prevBufferLen=this.writeBuffer.length,this.emit("flush"))},r.prototype.write=r.prototype.send=function(t,e){return this.sendPacket("message",t,e),this},r.prototype.sendPacket=function(t,e,n){if("closing"!=this.readyState&&"closed"!=this.readyState){var r={type:t,data:e};this.emit("packetCreate",r),this.writeBuffer.push(r),this.callbackBuffer.push(n),this.flush()}},r.prototype.close=function(){function t(){r.onClose("forced close"),a("socket closing - telling transport to close"),r.transport.close()}function e(){r.removeListener("upgrade",e),r.removeListener("upgradeError",e),t()}function n(){r.once("upgrade",e),r.once("upgradeError",e)}if("opening"==this.readyState||"open"==this.readyState){this.readyState="closing";var r=this;this.writeBuffer.length?this.once("drain",function(){this.upgrading?n():t()}):this.upgrading?n():t()}return this},r.prototype.onError=function(t){a("socket error %j",t),r.priorWebsocketSuccess=!1,this.emit("error",t),this.onClose("transport error",t)},r.prototype.onClose=function(t,e){if("opening"==this.readyState||"open"==this.readyState||"closing"==this.readyState){a('socket close with reason: "%s"',t);var n=this;clearTimeout(this.pingIntervalTimer),clearTimeout(this.pingTimeoutTimer),setTimeout(function(){n.writeBuffer=[],n.callbackBuffer=[],n.prevBufferLen=0},0),this.transport.removeAllListeners("close"),this.transport.close(),this.transport.removeAllListeners(),this.readyState="closed",this.id=null,this.emit("close",t,e)}},r.prototype.filterUpgrades=function(t){for(var e=[],n=0,r=t.length;r>n;n++)~c(this.transports,t[n])&&e.push(t[n]);return e}}).call(this,"undefined"!=typeof self?self:"undefined"!=typeof window?window:{})},{"./transport":14,"./transports":15,"component-emitter":9,debug:22,"engine.io-parser":25,indexof:42,parsejson:34,parseqs:35,parseuri:36}],14:[function(t,e){function n(t){this.path=t.path,this.hostname=t.hostname,this.port=t.port,this.secure=t.secure,this.query=t.query,this.timestampParam=t.timestampParam,this.timestampRequests=t.timestampRequests,this.readyState="",this.agent=t.agent||!1,this.socket=t.socket,this.enablesXDR=t.enablesXDR,this.pfx=t.pfx,this.key=t.key,this.passphrase=t.passphrase,this.cert=t.cert,this.ca=t.ca,this.ciphers=t.ciphers,this.rejectUnauthorized=t.rejectUnauthorized}var r=t("engine.io-parser"),o=t("component-emitter");e.exports=n,o(n.prototype),n.timestamps=0,n.prototype.onError=function(t,e){var n=new Error(t);return n.type="TransportError",n.description=e,this.emit("error",n),this},n.prototype.open=function(){return("closed"==this.readyState||""==this.readyState)&&(this.readyState="opening",this.doOpen()),this},n.prototype.close=function(){return("opening"==this.readyState||"open"==this.readyState)&&(this.doClose(),this.onClose()),this},n.prototype.send=function(t){if("open"!=this.readyState)throw new Error("Transport not open");this.write(t)},n.prototype.onOpen=function(){this.readyState="open",this.writable=!0,this.emit("open")},n.prototype.onData=function(t){var e=r.decodePacket(t,this.socket.binaryType);this.onPacket(e)},n.prototype.onPacket=function(t){this.emit("packet",t)},n.prototype.onClose=function(){this.readyState="closed",this.emit("close")}},{"component-emitter":9,"engine.io-parser":25}],15:[function(t,e,n){(function(e){function r(t){var n,r=!1,a=!1,c=!1!==t.jsonp;if(e.location){var p="https:"==location.protocol,u=location.port;u||(u=p?443:80),r=t.hostname!=location.hostname||u!=t.port,a=t.secure!=p}if(t.xdomain=r,t.xscheme=a,n=new o(t),"open"in n&&!t.forceJSONP)return new i(t);if(!c)throw new Error("JSONP disabled");return new s(t)}var o=t("xmlhttprequest"),i=t("./polling-xhr"),s=t("./polling-jsonp"),a=t("./websocket");n.polling=r,n.websocket=a}).call(this,"undefined"!=typeof self?self:"undefined"!=typeof window?window:{})},{"./polling-jsonp":16,"./polling-xhr":17,"./websocket":19,xmlhttprequest:20}],16:[function(t,e){(function(n){function r(){}function o(t){i.call(this,t),this.query=this.query||{},a||(n.___eio||(n.___eio=[]),a=n.___eio),this.index=a.length;var e=this;a.push(function(t){e.onData(t)}),this.query.j=this.index,n.document&&n.addEventListener&&n.addEventListener("beforeunload",function(){e.script&&(e.script.onerror=r)},!1)}var i=t("./polling"),s=t("component-inherit");e.exports=o;var a,c=/\n/g,p=/\\n/g;s(o,i),o.prototype.supportsBinary=!1,o.prototype.doClose=function(){this.script&&(this.script.parentNode.removeChild(this.script),this.script=null),this.form&&(this.form.parentNode.removeChild(this.form),this.form=null,this.iframe=null),i.prototype.doClose.call(this)},o.prototype.doPoll=function(){var t=this,e=document.createElement("script");this.script&&(this.script.parentNode.removeChild(this.script),this.script=null),e.async=!0,e.src=this.uri(),e.onerror=function(e){t.onError("jsonp poll error",e)};var n=document.getElementsByTagName("script")[0];n.parentNode.insertBefore(e,n),this.script=e;var r="undefined"!=typeof navigator&&/gecko/i.test(navigator.userAgent);r&&setTimeout(function(){var t=document.createElement("iframe");document.body.appendChild(t),document.body.removeChild(t)},100)},o.prototype.doWrite=function(t,e){function n(){r(),e()}function r(){if(o.iframe)try{o.form.removeChild(o.iframe)}catch(t){o.onError("jsonp polling iframe removal error",t)}try{var e='<iframe src="javascript:0" name="'+o.iframeId+'">';i=document.createElement(e)}catch(t){i=document.createElement("iframe"),i.name=o.iframeId,i.src="javascript:0"}i.id=o.iframeId,o.form.appendChild(i),o.iframe=i}var o=this;if(!this.form){var i,s=document.createElement("form"),a=document.createElement("textarea"),u=this.iframeId="eio_iframe_"+this.index;s.className="socketio",s.style.position="absolute",s.style.top="-1000px",s.style.left="-1000px",s.target=u,s.method="POST",s.setAttribute("accept-charset","utf-8"),a.name="d",s.appendChild(a),document.body.appendChild(s),this.form=s,this.area=a}this.form.action=this.uri(),r(),t=t.replace(p,"\\\n"),this.area.value=t.replace(c,"\\n");try{this.form.submit()}catch(f){}this.iframe.attachEvent?this.iframe.onreadystatechange=function(){"complete"==o.iframe.readyState&&n()}:this.iframe.onload=n}}).call(this,"undefined"!=typeof self?self:"undefined"!=typeof window?window:{})},{"./polling":18,"component-inherit":21}],17:[function(t,e){(function(n){function r(){}function o(t){if(c.call(this,t),n.location){var e="https:"==location.protocol,r=location.port;r||(r=e?443:80),this.xd=t.hostname!=n.location.hostname||r!=t.port,this.xs=t.secure!=e}}function i(t){this.method=t.method||"GET",this.uri=t.uri,this.xd=!!t.xd,this.xs=!!t.xs,this.async=!1!==t.async,this.data=void 0!=t.data?t.data:null,this.agent=t.agent,this.isBinary=t.isBinary,this.supportsBinary=t.supportsBinary,this.enablesXDR=t.enablesXDR,this.pfx=t.pfx,this.key=t.key,this.passphrase=t.passphrase,this.cert=t.cert,this.ca=t.ca,this.ciphers=t.ciphers,this.rejectUnauthorized=t.rejectUnauthorized,this.create()}function s(){for(var t in i.requests)i.requests.hasOwnProperty(t)&&i.requests[t].abort()}var a=t("xmlhttprequest"),c=t("./polling"),p=t("component-emitter"),u=t("component-inherit"),f=t("debug")("engine.io-client:polling-xhr");e.exports=o,e.exports.Request=i,u(o,c),o.prototype.supportsBinary=!0,o.prototype.request=function(t){return t=t||{},t.uri=this.uri(),t.xd=this.xd,t.xs=this.xs,t.agent=this.agent||!1,t.supportsBinary=this.supportsBinary,t.enablesXDR=this.enablesXDR,t.pfx=this.pfx,t.key=this.key,t.passphrase=this.passphrase,t.cert=this.cert,t.ca=this.ca,t.ciphers=this.ciphers,t.rejectUnauthorized=this.rejectUnauthorized,new i(t)},o.prototype.doWrite=function(t,e){var n="string"!=typeof t&&void 0!==t,r=this.request({method:"POST",data:t,isBinary:n}),o=this;r.on("success",e),r.on("error",function(t){o.onError("xhr post error",t)}),this.sendXhr=r},o.prototype.doPoll=function(){f("xhr poll");var t=this.request(),e=this;t.on("data",function(t){e.onData(t)}),t.on("error",function(t){e.onError("xhr poll error",t)}),this.pollXhr=t},p(i.prototype),i.prototype.create=function(){var t={agent:this.agent,xdomain:this.xd,xscheme:this.xs,enablesXDR:this.enablesXDR};t.pfx=this.pfx,t.key=this.key,t.passphrase=this.passphrase,t.cert=this.cert,t.ca=this.ca,t.ciphers=this.ciphers,t.rejectUnauthorized=this.rejectUnauthorized;var e=this.xhr=new a(t),r=this;try{if(f("xhr open %s: %s",this.method,this.uri),e.open(this.method,this.uri,this.async),this.supportsBinary&&(e.responseType="arraybuffer"),"POST"==this.method)try{this.isBinary?e.setRequestHeader("Content-type","application/octet-stream"):e.setRequestHeader("Content-type","text/plain;charset=UTF-8")}catch(o){}"withCredentials"in e&&(e.withCredentials=!0),this.hasXDR()?(e.onload=function(){r.onLoad()},e.onerror=function(){r.onError(e.responseText)}):e.onreadystatechange=function(){4==e.readyState&&(200==e.status||1223==e.status?r.onLoad():setTimeout(function(){r.onError(e.status)},0))},f("xhr data %s",this.data),e.send(this.data)}catch(o){return void setTimeout(function(){r.onError(o)},0)}n.document&&(this.index=i.requestsCount++,i.requests[this.index]=this)},i.prototype.onSuccess=function(){this.emit("success"),this.cleanup()},i.prototype.onData=function(t){this.emit("data",t),this.onSuccess()},i.prototype.onError=function(t){this.emit("error",t),this.cleanup(!0)},i.prototype.cleanup=function(t){if("undefined"!=typeof this.xhr&&null!==this.xhr){if(this.hasXDR()?this.xhr.onload=this.xhr.onerror=r:this.xhr.onreadystatechange=r,t)try{this.xhr.abort()}catch(e){}n.document&&delete i.requests[this.index],this.xhr=null}},i.prototype.onLoad=function(){var t;try{var e;try{e=this.xhr.getResponseHeader("Content-Type").split(";")[0]}catch(n){}t="application/octet-stream"===e?this.xhr.response:this.supportsBinary?"ok":this.xhr.responseText}catch(n){this.onError(n)}null!=t&&this.onData(t)},i.prototype.hasXDR=function(){return"undefined"!=typeof n.XDomainRequest&&!this.xs&&this.enablesXDR},i.prototype.abort=function(){this.cleanup()},n.document&&(i.requestsCount=0,i.requests={},n.attachEvent?n.attachEvent("onunload",s):n.addEventListener&&n.addEventListener("beforeunload",s,!1))}).call(this,"undefined"!=typeof self?self:"undefined"!=typeof window?window:{})},{"./polling":18,"component-emitter":9,"component-inherit":21,debug:22,xmlhttprequest:20}],18:[function(t,e){function n(t){var e=t&&t.forceBase64;
+(!c||e)&&(this.supportsBinary=!1),r.call(this,t)}var r=t("../transport"),o=t("parseqs"),i=t("engine.io-parser"),s=t("component-inherit"),a=t("debug")("engine.io-client:polling");e.exports=n;var c=function(){var e=t("xmlhttprequest"),n=new e({xdomain:!1});return null!=n.responseType}();s(n,r),n.prototype.name="polling",n.prototype.doOpen=function(){this.poll()},n.prototype.pause=function(t){function e(){a("paused"),n.readyState="paused",t()}var n=this;if(this.readyState="pausing",this.polling||!this.writable){var r=0;this.polling&&(a("we are currently polling - waiting to pause"),r++,this.once("pollComplete",function(){a("pre-pause polling complete"),--r||e()})),this.writable||(a("we are currently writing - waiting to pause"),r++,this.once("drain",function(){a("pre-pause writing complete"),--r||e()}))}else e()},n.prototype.poll=function(){a("polling"),this.polling=!0,this.doPoll(),this.emit("poll")},n.prototype.onData=function(t){var e=this;a("polling got data %s",t);var n=function(t){return"opening"==e.readyState&&e.onOpen(),"close"==t.type?(e.onClose(),!1):void e.onPacket(t)};i.decodePayload(t,this.socket.binaryType,n),"closed"!=this.readyState&&(this.polling=!1,this.emit("pollComplete"),"open"==this.readyState?this.poll():a('ignoring poll - transport state "%s"',this.readyState))},n.prototype.doClose=function(){function t(){a("writing close packet"),e.write([{type:"close"}])}var e=this;"open"==this.readyState?(a("transport open - closing"),t()):(a("transport not open - deferring close"),this.once("open",t))},n.prototype.write=function(t){var e=this;this.writable=!1;var n=function(){e.writable=!0,e.emit("drain")},e=this;i.encodePayload(t,this.supportsBinary,function(t){e.doWrite(t,n)})},n.prototype.uri=function(){var t=this.query||{},e=this.secure?"https":"http",n="";return!1!==this.timestampRequests&&(t[this.timestampParam]=+new Date+"-"+r.timestamps++),this.supportsBinary||t.sid||(t.b64=1),t=o.encode(t),this.port&&("https"==e&&443!=this.port||"http"==e&&80!=this.port)&&(n=":"+this.port),t.length&&(t="?"+t),e+"://"+this.hostname+n+this.path+t}},{"../transport":14,"component-inherit":21,debug:22,"engine.io-parser":25,parseqs:35,xmlhttprequest:20}],19:[function(t,e){function n(t){var e=t&&t.forceBase64;e&&(this.supportsBinary=!1),r.call(this,t)}var r=t("../transport"),o=t("engine.io-parser"),i=t("parseqs"),s=t("component-inherit"),a=t("debug")("engine.io-client:websocket"),c=t("ws");e.exports=n,s(n,r),n.prototype.name="websocket",n.prototype.supportsBinary=!0,n.prototype.doOpen=function(){if(this.check()){var t=this.uri(),e=void 0,n={agent:this.agent};n.pfx=this.pfx,n.key=this.key,n.passphrase=this.passphrase,n.cert=this.cert,n.ca=this.ca,n.ciphers=this.ciphers,n.rejectUnauthorized=this.rejectUnauthorized,this.ws=new c(t,e,n),void 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\ No newline at end of file
diff --git a/share/templates/chat.html b/share/templates/chat.html
new file mode 100644
index 00000000..1c40065e
--- /dev/null
+++ b/share/templates/chat.html
@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<html>
+ <head>
+    <title>OnionShare</title>
+    <link href="{{ static_url_path }}/img/favicon.ico" rel="icon" type="image/x-icon">
+    <link rel="stylesheet" rel="subresource" type="text/css" href="{{ static_url_path }}/css/style.css" media="all">
+  </head>
+  <body>
+
+    <header class="clearfix">
+        <img class="logo" src="{{ static_url_path }}/img/logo.png" title="OnionShare">
+        <h1>OnionShare</h1>
+    </header>
+    <noscript>
+      <p>
+        Chat <b>requires JavaScript</b>, so you must set your Tor Browser security
+        level to <b>Safer</b> or <b>Standard</b> to join.
+      </p>
+    </noscript>
+
+    <div class="chat-container no-js">
+      <div class="chat-users">
+        <div class="editable-username">
+          <input id="username" value="{{ username }}" />
+          <button id="update-username" disabled>Save</button>
+        </div>
+        <ul id="user-list">
+        </ul>
+      </div>
+      <div class="chat-wrapper">
+        <p class="chat-header">Chat Messages</p>
+
+        <div id="chat"></div>
+
+        <div class="chat-form">
+          <p><input type="text" id="new-message" name="new-message" placeholder="Type your message"/></p>
+          <p><button type="button" id="send-button" class="button">Send Message</button></p>
+        </div>
+
+      </div>
+    </div>
+    <script src="{{ static_url_path }}/js/jquery-3.5.1.min.js"></script>
+    <script src="{{ static_url_path }}/js/socket.io.min.js"></script>
+    <script async src="{{ static_url_path }}/js/chat.js"></script>
+  </body>
+</html>