Route. Schedule. Plan. Assign. Pack. Solve.

OR-Tools is fast and portable software for combinatorial optimization.

Get started with OR-Tools

Learn how to solve optimization problems from C++, Python, C#, or Java.

Download OR-Tools

See the Release Notes for the latest updates.

Announcing the CP-SAT solver

A new faster constraint programming solver.

About OR-Tools

OR-Tools is an open source software suite for optimization, tuned for tackling the world's toughest problems in vehicle routing, flows, integer and linear programming, and constraint programming.

After modeling your problem in the programming language of your choice, you can use any of a half dozen solvers to solve it: commercial solvers such as Gurobi or CPLEX, or open-source solvers such as SCIP, GLPK, or Google's GLOP and award-winning CP-SAT.

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