https://en.wikipedia.org/wiki/COIN-OR
Computational Infrastructure for Operations Research (COIN-OR), is a project that aims to "create for mathematical software what the open literature is for mathematical theory."
- COIN-OR LP (CLP or Clp) is an open-source linear programming solver written in C++.
- COIN-OR branch and cut (CBC or Cbc) is an open-source mixed integer programming solver written in C++.