Top 9 Java Solver Projects

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1. Timefold Solver

   1 19 1,393 9.7 Java

   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. InfluxDB

   www.influxdata.com featured

   InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.

   

3. TexasHoldemSolverJava

   2 6 857 0.0 Java

   A Java implemented Texas holdem and short deck Solver

   

   Project mention: Game Theory in Action: Pluribus and CFR in Texas Hold'em(1) Understanding Nash Equilibrium | dev.to | 2024-07-26

   Using Nash Equilibrium solvers, such as the one provided by bupticybee on their GitHub (https://github.com/bupticybee/TexasHoldemSolverJava), we find: For Player 1: With AA, bet 1 100% of the time. With QQ, check 66% and bet 1 33% of the time. For Player 2, facing a bet: With KK, call 66% and fold 33% of the time. ​

4. Choco

   3 4 724 9.2 Java

   An open-source Java library for Constraint Programming

   

5. commons-math

   4 1 617 9.0 Java

   Apache Commons Math

   

6. opennars

   5 5 398 0.0 Java

   OpenNARS for Research 3.0+

   

7. OptaPlanner

   6 30 403 2.8 Java

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

   

8. Hodoku

   7 13 91 0.0 Java

   Hodoku is a solver/generator/trainer/analyzer for standard sudoku.

   

9. Stream

   getstream.io featured

   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.

   

10. zebra4j

    8 1 11 6.3 Java

    zebra4j is a generator and solver library for Zebra puzzles, also knows as "logic grid puzzles".

    

11. GradleCenturion

    9 1 5 7.6 Java

    The KTANE Centurion Manual but in Java

    

Java Solver related posts

• Solving the local optima problem – NQueens

  2 projects | news.ycombinator.com | 16 May 2025

• Game Theory in Action: Pluribus and CFR in Texas Hold'em(1) Understanding Nash Equilibrium

  1 project | dev.to | 26 Jul 2024

• Are there any specific Sudoku puzzles?

  1 project | /r/sudoku | 13 May 2023

• Constraint Programming (2020)

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

• In the circled area, there can be 2 possible triples(569 and 589) , how would I know which one's the right one? and why can't the other be chosen?

  1 project | /r/sudoku | 25 Jan 2023

• What do I do here?

  1 project | /r/sudoku | 18 Jan 2023

• What are your opinions on sudoku online? Other website recommendations?

  1 project | /r/sudoku | 30 Sep 2022
• A note from our sponsor - InfluxDB
  www.influxdata.com | 16 Jul 2025

  InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now. Learn more →

Index

Sponsored

InfluxDB – Built for High-Performance Time Series Workloads

InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.

www.influxdata.com

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