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/125564/capstone-2.1.tgz
Source: https://packetstormsecurity.com/files/125564/Capstone-2.1.html