RetDec is a retargetable machine-code decompiler based on LLVM
Capstone disassembly/disassembler framework
The Open On-Chip Debugger
d7avx + dbgavx - SSE/AVX development/debug helpers for 32bits delphi
A machine code manipulation library for Intel 64 and IA-32.
Flexible and eXpandable Cpu simulation
A simulator for Atmel's 8/16-bit AVR microcontrollers
ARM Visual Disassembler