diff --git a/README.md b/README.md
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@@ -153,6 +153,10 @@ This repository is created as an online bookmark for useful links, resources and
         <td><a href="https://binvis.io/#/">binvis.io</a></td>
         <td>visual analysis of binary files</td>
     </tr>
+    <tr>
+        <td><a href="https://github.com/blackberry/pe_tree">blackberry/pe_tree</a></td>
+        <td>Python module for viewing Portable Executable (PE) files in a tree-view using pefile and PyQt5. Can also be used with IDA Pro to dump in-memory PE files and reconstruct imports.</td>
+    </tr>
     <tr>
         <td><a href="https://github.com/carbonblack/binee">carbonblack/binee</a></td>
         <td>Binee: binary emulation environment</td>
@@ -1067,6 +1071,10 @@ This repository is created as an online bookmark for useful links, resources and
         <td><a href="https://github.com/countercept/snake">countercept/snake</a></td>
         <td>snake - a malware storage zoo</td>
     </tr>
+    <tr>
+        <td><a href="https://github.com/D4stiny/spectre">D4stiny/spectre</a></td>
+        <td>A Windows kernel-mode rootkit that abuses legitimate communication channels to control a machine.</td>
+    </tr>
     <tr>
         <td><a href="http://dasmalwerk.eu/">DAS MALWERK</a></td>
         <td>DAS MALWERK - your one stop shop for fresh malware samples</td>
@@ -1549,6 +1557,10 @@ This repository is created as an online bookmark for useful links, resources and
         <td><a href="https://packettotal.com/">PacketTotal</a></td>
         <td>A free, online PCAP analysis engine</td>
     </tr>
+    <tr>
+        <td><a href="https://github.com/sensepost/routopsy">sensepost/routopsy</a></td>
+        <td>Routopsy is a toolkit built to attack often overlooked networking protocols. Routopsy currently supports attacks against Dynamic Routing Protocols (DRP) and First-Hop Redundancy Protocols (FHRP).</td>
+    </tr>
     <tr>
         <td><a href="https://github.com/USArmyResearchLab/Dshell">USArmyResearchLab/Dshell</a></td>
         <td>An extensible network forensic analysis framework. Enables rapid development of plugins to support the dissection of network packet captures.</td>
@@ -1745,6 +1757,10 @@ This repository is created as an online bookmark for useful links, resources and
         <td><a href="https://github.com/0xbadjuju/Tokenvator">0xbadjuju/Tokenvator</a></td>
         <td>A tool to elevate privilege with Windows Tokens</td>
     </tr>
+    <tr>
+        <td><a href="https://github.com/3xpl01tc0d3r/Callidus">3xpl01tc0d3r/Callidus</a></td>
+        <td>It is developed using .net core framework in C# language. Allows operators to leverage O365 services for establishing command & control communication channel. It usages Microsoft Graph APIs for communicating with O365 services.</td>
+    </tr>
     <tr>
         <td><a href="https://github.com/411Hall/JAWS">411Hall/JAWS</a></td>
         <td>JAWS is PowerShell script designed to help penetration testers (and CTFers) quickly identify potential privilege escalation vectors on Windows systems. It is written using PowerShell 2.0 so 'should' run on every Windows version since Windows 7.</td>