: A widely used, reliable MIP solver often paired with Python modeling libraries. Nonlinear Programming (NLP):
: One of the fastest non-commercial solvers for MIP and Mixed-Integer Nonlinear Programming (MINLP). As of late 2025, major versions are available under the Apache 2.0 open-source license. Solver Software Open Source
: A long-standing, lightweight solver. While sometimes slower than newer alternatives, it is highly memory-efficient for large, simpler problems. : A widely used, reliable MIP solver often
: Currently considered the state-of-the-art open-source solver for LP. It features a high-performance interior point method and dual simplex solvers. : A widely used