diStorm is a binary stream disassembler. It's capable of disassembling 80x86 instructions in 64 bits (AMD64, x86-64) and both in 16 and 32 bits. In addition, it disassembles FPU, MMX, SSE, SSE2, SSE3 and 3DNow! (w/ extensions) and new x86-64 instruction sets.