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Top 19 Java Optimization Projects
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Project mention: $96 3D-printed rocket that recalculates its mid-air trajectory using a $5 sensor | news.ycombinator.com | 2026-03-15
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AndroidGodEye
An app performance monitor(APM) , like "Android Studio profiler", you can easily monitor the performance of your app real time in browser
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oj! Algorithms
oj! Algorithms - Open Source Java library for mathematics, linear algebra and optimisation. Pure Java, zero dependencies: fast matrices plus LP, QP and MIP solvers.
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OptaPlanner
Java Constraint Solver to solve vehicle routing, employee rostering, task assignment, maintenance scheduling, conference scheduling and other planning problems.
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DimensionalThreading
An attempt to optimize the fabric server, by assigning each dimension their own thread.
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hipparchus
An efficient, general-purpose mathematics components library in the Java programming language
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Miniboxing
Miniboxing is a program transformation that improves the performance of Scala generics when used with primitive types. It can speed up generic collections by factors between 1.5x and 22x, while maintaining bytecode duplication to a minimum. You can easily add miniboxing to your sbt project:
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jplusone
Tool for automatic detection and asserting "N+1 SELECT problem" occurences in JPA based Spring Boot Java applications and finding origin of JPA issued SQL statements in general
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Chips-n-Salsa
A Java library of Customizable, Hybridizable, Iterative, Parallel, Stochastic, and Self-Adaptive Local Search Algorithms
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hopperOptimizations
A mod that optimizes hoppers and their interactions with entities and inventories. It drastically reduces hopper lag without changing any behavior.
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BitDT
BitDT - Ultra-compact timestamp encoding 56% smaller than ISO format. For when every byte counts.
Project mention: Implementing BitDT: A Step-by-Step Guide to Date-Time Lossless Compression | dev.to | 2025-11-19Check the project repo now here.
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 Optimization discussion
Java Optimization related posts
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$96 3D-printed rocket that recalculates its mid-air trajectory using a $5 sensor
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Google CEO says more than a quarter of the company's new code is created by AI
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OptaPlanner VS timefold-solver - a user suggested alternative
2 projects | 23 Jun 2023 -
Resource Scheduling
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Searching for something to schedule IT helpdesk shifts
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Easy-to-use school scheduling software?
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Algorithm for Assigning Flights to Planes
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A note from our sponsor - SaaSHub
www.saashub.com | 17 Aug 2026
Index
What are some of the best open-source Optimization projects in Java? This list will help you:
| # | Project | Stars |
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| 1 | simplify | 4,656 |
| 2 | soot | 3,098 |
| 3 | openrocket | 3,043 |
| 4 | AndroidGodEye | 2,638 |
| 5 | commons-math | 652 |
| 6 | Glide Bitmap Pool | 602 |
| 7 | oj! Algorithms | 501 |
| 8 | OptaPlanner | 490 |
| 9 | DimensionalThreading | 252 |
| 10 | hipparchus | 185 |
| 11 | LoliASM | 141 |
| 12 | Miniboxing | 121 |
| 13 | jplusone | 115 |
| 14 | BetterFps | 106 |
| 15 | KnightLauncher | 89 |
| 16 | ArchaicFix | 86 |
| 17 | Chips-n-Salsa | 77 |
| 18 | hopperOptimizations | 62 |
| 19 | BitDT | 4 |
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