HxD - HxD is a carefully designed and fast hex editor which, additionally to raw disk editing and...
ILSpy - ICSharpCode. Decompiler. Console..
PilotEdit - PilotEdit Lite is an advanced text and hex editor that supports opening of files larger than 4GB.
dotPeek - dotPeek is a free tool based on ReSharper. It can reliably decompile any . NET assembly into C# or IL code. Download dotPeekCommunity. Materials Newsletters, webinars.
WinHex - WinHex hex editor, disk editor, RAM editor. Binary editor for files, disks, and RAM. Download HEX EDITOR. Sector editor. Drive editor.
dnSpy - .NET assembly editor, decompiler, and debugger