We fund and maintain critical open-source C++ infrastructure used by developers worldwide.
The world's most respected collection of peer-reviewed C++ libraries — 165+ libraries covering everything from algorithms to networking. We fund engineers who maintain and extend Boost, keeping it aligned with the modern C++ standard. Boost 1.89 shipped in August 2025.
WG21.org is a volunteer effort to make information from WG21, the ISO working group responsible for the C++ Programming Language standard (ISO/IEC 14882), easily accessible to the public.
A C++ documentation generator built on Clang that parses source with full language fidelity — templates, constraints, overloads, and Niebloids all included. Produces accurate API reference documentation that never drifts from the real code.
A research and internship program in partnership with Princeton University and CERN, focused on advancing Clang and LLVM. Alliance fellows work on upstream compiler contributions, compilation performance, and language interoperability for scientific computing.
Complete URL parsing and manipulation — audited, constexpr-capable, and production-ready.
HTTP and WebSocket library built on Boost.Asio, widely used in production networking applications.
Fast, standards-compliant JSON with a clean modern C++ API. Incremental parsing and serialization.
Async Redis client on Boost.Asio, supporting RESP3, pipelining, and cancellation.
Alliance engineers actively contribute to C++20 modules support in the Clang compiler toolchain.
Alliance contributors author and shepherd proposals through the ISO/IEC C++ standardization process.
Empowering C++ — funding libraries, building community, shaping the future of the language.
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