Repositories list

• SYMPHONY

  Public
  SYMPHONY is an open-source solver, callable library, and development framework for mixed-integer linear programs (MILPs) written in C with a number of unique fe…

  C

  •

  Other

  •2020 forks in coin-or/SYMPHONY•7777 stars in coin-or/SYMPHONY•6969 issues in coin-or/SYMPHONY•55 pull requests in coin-or/SYMPHONY•Updated Oct 16, 2026Oct 16, 2026

• cuopt

  Public
  This is a mirror of the NVIDIA cuOpt project. Please do not open PRs here.

  Cuda

  •

  Apache License 2.0

  •244244 forks in coin-or/cuopt•1616 stars in coin-or/cuopt•00 issues in coin-or/cuopt•00 pull requests in coin-or/cuopt•Updated Oct 16, 2026Oct 16, 2026

• HiGHS

  Public
  A mirror of the HiGHS LP solver repository.

  C++

  •

  MIT License

  •376376 forks in coin-or/HiGHS•66 stars in coin-or/HiGHS•00 issues in coin-or/HiGHS•00 pull requests in coin-or/HiGHS•Updated Oct 16, 2026Oct 16, 2026

• mpi-sppy

  Public
  A mirror of the mpi-sppy (MPI-based Stochastic Programming in PYthon) repository.

  Python

  •

  Other

  •00 forks in coin-or/mpi-sppy•00 stars in coin-or/mpi-sppy•00 issues in coin-or/mpi-sppy•00 pull requests in coin-or/mpi-sppy•Updated Oct 16, 2026Oct 16, 2026

• SHOT

  Public
  A solver for mixed-integer nonlinear optimization problems

  optimizationsolverminlp+ 3

  optimizationsolverminlpglobal-optimizationoptimization-methodsoptimization-library

  C++

  •

  Eclipse Public License 2.0

  •2727 forks in coin-or/SHOT•135135 stars in coin-or/SHOT•77 issues in coin-or/SHOT•22 pull requests in coin-or/SHOT•Updated Oct 16, 2026Oct 16, 2026

• MibS

  Public
  A solver for mixed integer bilevel programs

  Mathematical Programming System

  •

  Other

  •2121 forks in coin-or/MibS•6363 stars in coin-or/MibS•88 issues in coin-or/MibS•55 pull requests in coin-or/MibS•Updated Oct 16, 2026Oct 16, 2026

• CHiPPS-BLIS

  Public
  This is the BiCePS Linear Integer Solver (BLIS), a parallel solver for mixed integer linear programs that is implemented on top of the BiCePS layer of the CHiPP…

  C++

  •

  Eclipse Public License 1.0

  •66 forks in coin-or/CHiPPS-BLIS•88 stars in coin-or/CHiPPS-BLIS•22 issues in coin-or/CHiPPS-BLIS•00 pull requests in coin-or/CHiPPS-BLIS•Updated Oct 16, 2026Oct 16, 2026

• CHiPPS-BiCePS

  Public
  This is the Branch, Constrain, and Price Software (BiCePS), a layer of the COIN-OR High Performance Parallel Search framework supporting the implementation of r…

  Shell

  •

  Eclipse Public License 1.0

  •55 forks in coin-or/CHiPPS-BiCePS•88 stars in coin-or/CHiPPS-BiCePS•55 issues in coin-or/CHiPPS-BiCePS•00 pull requests in coin-or/CHiPPS-BiCePS•Updated Oct 16, 2026Oct 16, 2026

• CHiPPS-ALPS

  Public
  This is the Abstract Library for Parallel Search (ALPS), the abstract base layer of the COIN-OR High Performance Parallel Search framework.

  C++

  •

  Eclipse Public License 1.0

  •88 forks in coin-or/CHiPPS-ALPS•1111 stars in coin-or/CHiPPS-ALPS•1111 issues in coin-or/CHiPPS-ALPS•00 pull requests in coin-or/CHiPPS-ALPS•Updated Oct 16, 2026Oct 16, 2026

• CoinUtils

  Public
  COIN-OR Utilities

  C++

  •

  Other

  •4747 forks in coin-or/CoinUtils•5353 stars in coin-or/CoinUtils•2626 issues in coin-or/CoinUtils•55 pull requests in coin-or/CoinUtils•Updated Oct 16, 2026Oct 16, 2026

• Osi

  Public
  Open Solver Interface

  C++

  •

  Other

  •4646 forks in coin-or/Osi•6464 stars in coin-or/Osi•1818 issues in coin-or/Osi•55 pull requests in coin-or/Osi•Updated Oct 16, 2026Oct 16, 2026

• Clp

  Public
  COIN-OR Linear Programming Solver

  C++

  •

  Other

  •9999 forks in coin-or/Clp•499499 stars in coin-or/Clp•4242 issues in coin-or/Clp•66 pull requests in coin-or/Clp•Updated Oct 16, 2026Oct 16, 2026

• Cgl

  Public
  Cut Generator Library

  C++

  •

  Other

  •2020 forks in coin-or/Cgl•2828 stars in coin-or/Cgl•1818 issues in coin-or/Cgl•66 pull requests in coin-or/Cgl•Updated Oct 16, 2026Oct 16, 2026

• Cbc

  Public
  COIN-OR Branch-and-Cut solver

  C++

  •

  Other

  •144144 forks in coin-or/Cbc•1k1k stars in coin-or/Cbc•164164 issues in coin-or/Cbc•1111 pull requests in coin-or/Cbc•Updated Oct 16, 2026Oct 16, 2026

• Bonmin

  Public
  Basic Open-source Nonlinear Mixed INteger programming

  C++

  •

  Eclipse Public License 1.0

  •2323 forks in coin-or/Bonmin•149149 stars in coin-or/Bonmin•2121 issues in coin-or/Bonmin•33 pull requests in coin-or/Bonmin•Updated Oct 16, 2026Oct 16, 2026

• coinbrew

  Public
  COIN-OR build and installation script

  Shell

  •1616 forks in coin-or/coinbrew•3333 stars in coin-or/coinbrew•1010 issues in coin-or/coinbrew•22 pull requests in coin-or/coinbrew•Updated Oct 16, 2026Oct 16, 2026

• DyLP

  Public
  Dynamic Simplex solver

  C

  •

  Other

  •66 forks in coin-or/DyLP•33 stars in coin-or/DyLP•11 issue in coin-or/DyLP•22 pull requests in coin-or/DyLP•Updated Oct 16, 2026Oct 16, 2026

• Dip

  Public
  DIP is a decomposition-based solver framework for mixed integer linear programs.

  C++

  •

  Eclipse Public License 1.0

  •99 forks in coin-or/Dip•2222 stars in coin-or/Dip•8282 issues in coin-or/Dip•44 pull requests in coin-or/Dip•Updated Oct 15, 2026Oct 15, 2026

• ADOL-C

  Public
  A Package for Automatic Differentiation of Algorithms Written in C/C++

  C++

  •

  Other

  •4343 forks in coin-or/ADOL-C•184184 stars in coin-or/ADOL-C•5454 issues in coin-or/ADOL-C•55 pull requests in coin-or/ADOL-C•Updated Oct 14, 2026Oct 14, 2026

• pulp

  Public
  A python Linear Programming API

  pythonsolverconstraints+ 2

  pythonsolverconstraintspulpmip

  Python

  •

  Other

  •437437 forks in coin-or/pulp•2.5k2.5k stars in coin-or/pulp•3232 issues in coin-or/pulp•66 pull requests in coin-or/pulp•Updated Oct 14, 2026Oct 14, 2026

• pyomo

  Public
  An object-oriented algebraic modeling language in Python for structured optimization problems. This is a mirror, do not open pull requests here.

  Python

  •

  Other

  •594594 forks in coin-or/pyomo•22 stars in coin-or/pyomo•00 issues in coin-or/pyomo•00 pull requests in coin-or/pyomo•Updated Oct 14, 2026Oct 14, 2026

• frontier

  Public
  A mirror of the Frontier repository. Frontier is an optimization toolkit for AI agents and their users to navigate multi-objective decisions by exploring soluti…

  Python

  •

  Apache License 2.0

  •00 forks in coin-or/frontier•11 star in coin-or/frontier•00 issues in coin-or/frontier•00 pull requests in coin-or/frontier•Updated Oct 12, 2026Oct 12, 2026

• Ipopt

  Public
  COIN-OR Interior Point Optimizer IPOPT

  C++

  •

  Eclipse Public License 2.0

  •317317 forks in coin-or/Ipopt•1.8k1.8k stars in coin-or/Ipopt•88 issues in coin-or/Ipopt•33 pull requests in coin-or/Ipopt•Updated Oct 10, 2026Oct 10, 2026

• COIN-OR-OptimizationSuite

  Public
  A harness for building the bundled suite of interoperable optimization tools available in the COIN-OR repository.

  Shell

  •4141 forks in coin-or/COIN-OR-OptimizationSuite•138138 stars in coin-or/COIN-OR-OptimizationSuite•77 issues in coin-or/COIN-OR-OptimizationSuite•00 pull requests in coin-or/COIN-OR-OptimizationSuite•Updated Oct 8, 2026Oct 8, 2026

• CppAD

  Public
  A C++ Algorithmic Differentiation Package: Home Page

  C++

  •

  Other

  •117117 forks in coin-or/CppAD•593593 stars in coin-or/CppAD•1111 issues in coin-or/CppAD•22 pull requests in coin-or/CppAD•Updated Oct 7, 2026Oct 7, 2026

• python-mip

  Public
  Python-MIP: collection of Python tools for the modeling and solution of Mixed-Integer Linear programs

  optimizationmodelinglinear-programming+ 5

  optimizationmodelinglinear-programmingoptimization-toolsoptimization-algorithmsoptimization-frameworkmipinteger-programming

  Linear Programming

  •

  Eclipse Public License 2.0

  •108108 forks in coin-or/python-mip•605605 stars in coin-or/python-mip•110110 issues in coin-or/python-mip•66 pull requests in coin-or/python-mip•Updated Sep 25, 2026Sep 25, 2026

• Couenne

  Public
  Convex Over and Under Envelopes for Nonlinear Estimation

  C++

  •

  Eclipse Public License 1.0

  •1212 forks in coin-or/Couenne•9090 stars in coin-or/Couenne•2828 issues in coin-or/Couenne•00 pull requests in coin-or/Couenne•Updated Sep 17, 2026Sep 17, 2026

• balans

  Public
  [IJCAI'25] Bandit-based Adaptive Large-Neighborhood Search

  Linear Programming

  •

  Apache License 2.0

  •00 forks in coin-or/balans•2424 stars in coin-or/balans•00 issues in coin-or/balans•00 pull requests in coin-or/balans•Updated Aug 13, 2026Aug 13, 2026

• minotaur

  Public
  Minotaur Toolkit for Mixed-Integer Nonlinear Optimization

  open-sourcenonlinear-optimizationoptimization-algorithms+ 3

  open-sourcenonlinear-optimizationoptimization-algorithmscombinatorial-optimizationmixed-integer-programminginteger-optimization

  C++

  •

  Other

  •2525 forks in coin-or/minotaur•8282 stars in coin-or/minotaur•2727 issues in coin-or/minotaur•00 pull requests in coin-or/minotaur•Updated Aug 10, 2026Aug 10, 2026

• clp-spreadsheet-solver

  Public
  Representing, solving, and visualizing Container Loading Problems, also known as 3D bin packing problems. Also contains BPP Spreadsheet Solver, a 2D Bin Packing…

  Eclipse Public License 2.0

  •33 forks in coin-or/clp-spreadsheet-solver•88 stars in coin-or/clp-spreadsheet-solver•00 issues in coin-or/clp-spreadsheet-solver•00 pull requests in coin-or/clp-spreadsheet-solver•Updated Jul 15, 2026Jul 15, 2026