libtorrent is a C++ library that implements the BitTorrent protocol with popular extensions for real-world deployment.
The library addresses the need for a complete, production-ready BitTorrent implementation by providing a full protocol stack in C++. It handles the complexity of peer-to-peer file transfer, including protocol extensions, and is designed to work across different deployment scenarios from servers to embedded devices through configurable compilation options.
Developers should choose libtorrent if they need to add BitTorrent functionality to a C++ application and require a mature, feature-complete implementation rather than building protocol support from scratch. The project suits both high-performance server applications and resource-constrained environments. Python bindings are available for developers preferring to work in Python while leveraging the underlying C++ implementation.
The project maintains continuous integration across Windows, macOS, and Linux platforms with automated testing. It participates in fuzzing programs to identify security issues. The codebase includes coverage tracking and has achieved recognition through open source infrastructure best practices certification. Documentation is provided through both the main project website and inline build instructions.
