A Hex Editor for Reverse Engineers, Programmers
Official radare2 GUI
The Open Source Disassembler
Fast and lightweight x86/x86-64 disassembler and code generation lib
Blazing fast and correct x86/x64 disassembler, assembler, decoder, etc
Capstone disassembly/disassembler framework
The Interactive MOS 6502 Disassembler for Windows
Export disassemblies into Protocol Buffers
Open-source disassembler for x86/x64 machine code (New BSD License!)
An assembler and disassembler for the JVM (Java Virtual Machine)
powerpc disassembler/assembler
Binary (hexadecimal) editor for Windows