diff --git a/README.md b/README.md
index f6ebfc9..d952939 100644
--- a/README.md
+++ b/README.md
@@ -492,10 +492,12 @@ the [browser malware](#browser-malware) section.*
 * [hackers-grep](https://github.com/codypierce/hackers-grep) - A utility to
   search for strings in PE executables including imports, exports, and debug
   symbols.
+* [Hopper](https://www.hopperapp.com/) - The macOS and Linux Disassembler.
 * [IDA Pro](https://www.hex-rays.com/products/ida/index.shtml) - Windows
   disassembler and debugger, with a free evaluation version.
 * [Immunity Debugger](http://debugger.immunityinc.com/) - Debugger for
   malware analysis and more, with a Python API.
+* [ILSpy](http://ilspy.net/) - ILSpy is the open-source .NET assembly browser and decompiler.
 * [Kaitai Struct](http://kaitai.io/) - DSL for file formats / network protocols /
   data structures reverse engineering and dissection, with code generation
   for C++, C#, Java, JavaScript, Perl, PHP, Python, Ruby.
@@ -549,6 +551,7 @@ the [browser malware](#browser-malware) section.*
   for x86 and x86_64.
 * [Vivisect](https://github.com/vivisect/vivisect) - Python tool for
   malware analysis.
+* [WinDbg](https://developer.microsoft.com/en-us/windows/hardware/download-windbg) - multipurpose debugger for the Microsoft Windows computer operating system, used to debug user mode applications, device drivers, and the kernel-mode memory dumps.
 * [X64dbg](https://github.com/x64dbg/) - An open-source x64/x32 debugger for windows.
 
 ## Network