Capstone is a multi-architecture, multi-platform disassembly framework. It has a simple and lightweight architecture-neutral API, thread-safe by design, provides details on disassembled instruction, and more.
You can download it from the following link: https://packetstormsecurity.com/files/download/124539/capstone-1.0.tgz
Source: https://packetstormsecurity.com/files/124539/Capstone-1.0.html