Java constraint-programming

Open-source Java projects categorized as constraint-programming
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Java constraint-solver Solver Constraint Satisfaction Problem Solver vehicle-routing-problem
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Top 4 Java constraint-programming Projects

constraint-programming

  1. Timefold Solver

    The open source Solver AI for Java and Kotlin to optimize scheduling and routing. Solve the vehicle routing problem, employee rostering, task assignment, maintenance scheduling and other planning problems.

    Project mention: Last fifty years of integer linear programming: Recent practical advances | news.ycombinator.com | 2025-06-17

  2. Stream

    Stream - Scalable APIs for Chat, Feeds, Moderation, & Video. Stream helps developers build engaging apps that scale to millions with performant and flexible Chat, Feeds, Moderation, and Video APIs and SDKs powered by a global edge network and enterprise-grade infrastructure.

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  3. Choco

    An open-source Java library for Constraint Programming

  4. OptaPlanner

    Java Constraint Solver to solve vehicle routing, employee rostering, task assignment, maintenance scheduling, conference scheduling and other planning problems.

  5. timefold-quickstarts

    Get started with Timefold quickstarts here. Optimize the vehicle routing problem, employee rostering, task assignment, maintenance scheduling and other planning problems.

    Project mention: Learning Solver Design: Automating Factorio Balancers | news.ycombinator.com | 2024-12-30

    It figured out the best layout to produce a particular item, for example green vials.

    We ended up removing it from the default quickstarts [1], but maybe we should reinstate it in timefold-sandbox?

    [1] https://github.com/TimefoldAI/timefold-quickstarts/commit/d9...

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).

Java constraint-programming discussion

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Java constraint-programming related posts

  • Constraint Programming (2020)

    1 project | news.ycombinator.com | 16 Apr 2023

  • How to Corrupt an SQLite Database File

    1 project | news.ycombinator.com | 30 Apr 2022

  • Constraint Programming: Solving Sudoku with Choco Solver library

    2 projects | dev.to | 27 Apr 2021

Index

What are some of the best open-source constraint-programming projects in Java? This list will help you:

# Project Stars
1 Timefold Solver 1,393
2 Choco 724
3 OptaPlanner 403
4 timefold-quickstarts 387

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