Add Discover,Zulip,Nvchad,Fluent Reader,Marker,MarkText

README.md

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 #### Chat Client Utilities
 - [![Open-Source Software][OSS Icon]](https://github.com/BetterDiscord/BetterDiscord) [BetterDiscord](https://betterdiscord.app/) - BetterDiscord extends the functionality of DiscordApp by enhancing it with new features.
+- [![Open-Source Software][OSS Icon]](https://github.com/trigg/Discover) [Discover](https://trigg.github.io/Discover/) - Yet another Discord overlay for Linux written in Python using GTK3.
 - [![Open-Source Software][OSS Icon]](https://github.com/Cog-Creators/Red-DiscordBot) [Red Discord Bot](https://cogs.red) - Red Discord Bot is a self-hosted music/chat/trivia bot that can run on a Raspberry Pi and a variety of OS's. It's extensible through a system of "Cogs" that allow it to do more.
 
 #### IRC Client
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 - [Viber](https://www.viber.com/download/) - Viber for Linux lets you send free messages and make free calls to other Viber users on any device and network, in any country.
 - [![Open-Source Software][OSS Icon]](https://github.com/weechat) [Weechat](https://weechat.org/) - WeeChat is a fast, light and extensible chat client.
 - [![Open-Source Software][OSS Icon]](https://github.com/wireapp) [Wire](https://wire.com/en/) - Secure communication. Full privacy.
+- [![Open-Source Software][OSS Icon]](https://github.com/zulip/zulip) [Zulip](https://zulip.com/) - Zulip is a powerful, open source group chat application that combines the immediacy of real-time chat with the productivity benefits of threaded conversations.
 
 ### Data Backup and Recovery
 - [![Open-Source Software][OSS Icon]](https://backintime-dev.readthedocs.io/en/latest/) [Back In Time](https://github.com/bit-team/backintime/) - A simple backup tool for Linux, inspired by "flyback project".
@@ -387,6 +389,7 @@
 - [![Open-Source Software][OSS Icon]](https://github.com/zyedidia/micro) [Micro](https://micro-editor.github.io) - Micro is a terminal-based text editor that aims to be easy to use and intuitive, while also taking advantage of the full capabilities of modern terminals.
 - [![Open-Source Software][OSS Icon]](http://git.savannah.gnu.org/cgit/nano.git/) [Nano](https://www.nano-editor.org/) - GNU Nano is a text editor which aims to introduce a simple interface and intuitive command options to console based text editing.
 - [![Open-Source Software][OSS Icon]](https://github.com/neovim/neovim) [Neovim](https://neovim.io/) - Neovim is a fork of Vim aiming to improve user experience, plugins, and GUIs.
+- [![Open-Source Software][OSS Icon]](https://github.com/NvChad/NvChad) [NvChad](https://nvchad.github.io/) - An attempt to make neovim cli functional like an IDE while being very beautiful and blazing fast.
 - [![Open-Source Software][OSS Icon]](https://github.com/syl20bnr/spacemacs) [Spacemacs](https://www.spacemacs.org/) - A community-driven Emacs distribution.
 - [![Open-Source Software][OSS Icon]](https://github.com/SpaceVim/SpaceVim) [SpaceVim](https://spacevim.org/) - A community-driven modular vim distribution.
 - [Sublime](https://www.sublimetext.com/) - A very capable text editor with advanced search capabilities, and many powerful plugins to improve its functionality.
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 - [![Open-Source Software][OSS Icon]](https://github.com/baedert/corebird) [Corebird](https://corebird.baedert.org/) - Corebird is native gtk+ twitter desktop client.
 - [![Open-Source Software][OSS Icon]](https://github.com/jangernert/FeedReader) [FeedReader](https://github.com/jangernert/FeedReader) - A modern desktop application designed to complement existing web-based RSS accounts, combines all the advantages of web based services and modern desktop application.
 - [![Open-Source Software][OSS Icon]](https://github.com/jeena/FeedTheMonkey) [FeedTheMonkey](https://github.com/jeena/FeedTheMonkey) - FeedTheMonkey is a desktop client for TinyTinyRSS.
+- [![Open-Source Software][OSS Icon]](https://github.com/yang991178/fluent-reader) [Fluent Reader](https://hyliu.me/fluent-reader/) - Modern desktop RSS reader built with Electron, React, and Fluent UI.
 - [![Open-Source Software][OSS Icon]](https://github.com/FreeTubeApp/FreeTube) [FreeTube](https://freetubeapp.io/) - FreeTube is a YouTube client for Windows, Mac, and Linux built around using YouTube more privately.
 - [![Open-Source Software][OSS Icon]](https://github.com/vinszent/gnome-twitch) [GnomeTwitch](https://gnome-twitch.vinszent.com/) - Enjoy Twitch on your GNU/Linux desktop with this Twitch non-Adobe-flash client.
 - [![Open-Source Software][OSS Icon]](https://github.com/EragonJ/Kaku) [Kaku](https://github.com/EragonJ/Kaku) - An opensource youtube music player for Ubuntu.
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 #### Markdown
 - [![Open-Source Software][OSS Icon]](http://github.com/wereturtle/ghostwriter) [Ghost Writer](http://wereturtle.github.io/ghostwriter/) - A distraction-free Markdown editor for Windows and Linux.
+- [![Open-Source Software][OSS Icon]](https://github.com/fabiocolacio/Marker) [Marker](https://github.com/fabiocolacio/Marker) - Marker is a markdown editor for linux made with GTK+-3.0.
+- [![Open-Source Software][OSS Icon]](https://github.com/marktext/marktext) [MarkText](https://marktext.app/) - MarkText is a free and open-source realtime preview markdown editor which support both CommonMark Spec and GitHub Flavored Markdown Spec. It is a concise text editor, dedicated to improving your writing efficiency.
 - [![Open-Source Software][OSS Icon]](https://github.com/jamiemcg/remarkable) [Remarkable](https://remarkableapp.github.io/) - A capable markdown editor that uses a variant of GitHub Flavored Markdown (GFM)
 - [![Open-Source Software][OSS Icon]](https://github.com/retext-project/retext) [Retext](https://github.com/retext-project/retext) - A Simple but powerful editor for Markdown and reStructuredText.
 - [Typora](https://typora.io/) - A Minimal markdown editor.