Reverse Engineering Tools

• .NET Framework
• ILSpy
• free software
• http://ilspy.net/
• https://github.com/icsharpcode/ILSpy
• de4dot
• to clean obfuscated program
• https://github.com/0xd4d/de4dot
• .NET Reflector
• $$$ :(
• http://www.red-gate.com/products/dotnet-development/reflector/
• monodis / ildasm are your good friends
• http://www.mono-project.com/Dis/Assembling_CIL_Code
• http://msdn.microsoft.com/zh-tw/library/f7dy01k1(v=vs.110).aspx
• Java
• Java Decompiler
• GUI! ( jd-gui )
• http://jd.benow.ca/
• APK
• APK-Multi-Tool
• https://github.com/APK-Multi-Tool/APK-Multi-Tool
• onekey-decompile-apk
• https://code.google.com/p/onekey-decompile-apk/
• Linux
• gdb
• also available on Windows
• https://www.gnu.org/software/gdb/
• Windows
• WinDbg
• official tool
• http://msdn.microsoft.com/en-us/windows/hardware/hh852365.aspx
• OllyDbg
• http://www.ollydbg.de/
• Cheat Engine
• http://www.cheatengine.org/
• General
• IDA
• widely used and powerful tool
• https://www.hex-rays.com/products/ida/

There are some tools mentioned in http://reverseengineering.stackexchange.com/questions/1817/is-there-any-disassembler-second-to-ida

And there is a good site: Reverse Engineering using the Linux Operating System ( http://reverse.lostrealm.com/ )

The last thing....

I don't have any device from Apple.

SO I KNOW NOTHING ABOUT iOS and OSX. :P