dnSpy
.NET assembly editor, decompiler, and debugger
18 Alternatives To dnSpy
Binary Ninja
A reverse engineering platform and GUI
Bytecode Viewer
A Java 8 Jar & Android APK Reverse Engineering Suite (Decompiler, Editor, Debugger & More)
CFF Explorer Suite
CFF Explorer Suite is a freeware pack of many developing and editing tools like PE editor, process viewer, etc.
CFR
CFR is a JVM bytecode decompiler - it will decompile modern Java features - up to and including much of Java 9, but is written entirely in Java 6, so will work anywhere!
Cavaj Java Decompiler
Download Cavaj Java Decompiler - A useful application that will enable developers to easily load, view and edit class files in order to rebuild the Java source code
Free UPX
Graphical interface for the UPX packer, UPX 3.91w, UPX 3.92w, UPX 3.93w, UPX 3.94w, Ultimate Packer for eXecutables, EXE packer
GrayWolf
GrayWolf is a .NET Decompiler that can edit the IL of a compiled .NET application.
ILSpy
ICSharpCode. Decompiler. Console..
Java Class File Editor
classeditor - tool to edit class file binaries
MSIL Disassembler
MSIL Disassembler is basically an IL disassembler that is companion tool to the IL assembler.
MonoDevelop
MonoDevelop enables developers to write desktop and web applications on Linux, Windows and Mac OS X.
PEBrowse64 Professional
PEBrowse64 Professional is a disassembler and static-analysis application that can be only used for the MS.
Procyon
A suite of Java metaprogramming tools focused on code generation, analysis, and decompilation.
Qt Creator
Qt Creator is a cross-platform C++, JavaScript and QML integrated development environment. It is the fastest, easiest and most fun experience a C++ developer could wish for.
UPX Graphical
Graphical GUI incl UPX 3.07 and a scrambler. Support Drag & Drop and context-menu.
WWPack32
WWPack32 - Windows executable files compressor and protector.
Zeta Resource Editor
Download Zeta Resource Editor. Zeta Resource Editor is a free application that enables you to edit standard Microsoft . NET string resources from multiple different resource files together inside one single data grid.
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.