Boost: librería avanzada de C++

Librería de código abierto compatible GPL, con componentes avanzados de algoritmos y de sistema.

Boost C++ Libraries - Wikipedia

The Boost C++ Libraries are a collection of peer-reviewed, open source libraries that extend the functionality of C++. Most of the libraries are licensed under the Boost Software License, designed to allow Boost to be used with both open and closed source projects. Many of Boost's founders are on the C++ standard committee