Official radare2 GUI
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
Third-party TI-84 Plus CE / TI-83 Premium CE emulator
The Open Source Disassembler
Export disassemblies into Protocol Buffers
Creates APNG animation from PNG/TGA image sequence.
Open-source disassembler for x86/x64 machine code (New BSD License!)
An assembler and disassembler for the JVM (Java Virtual Machine)
powerpc disassembler/assembler