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Top 23 Java Utility Projects
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Project mention: Are you really wasting your time in Java without these 10 libraries? | dev.to | 2025-11-20
Apache Commons Lang and Google Guava play the same role in the ecosystem, even though the former predates the latter: fill in the gaps in the Java standard APIs. For example, one of the biggest current PITAs in modern Java is checked exceptions inside lambdas. Both libraries provide wrapping methods to handle this specific use case. In general, modern Java versions and Kotlin drastically diminish the need for these additional dependencies.
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Generating an HTML page is nice. But what if you want to cross-reference this data, render it yourself in a tool like Gephi, or even provide it as context to an LLM to audit your architecture?
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AndroidProcesses
A legacy Android library for listing running processes by reading /proc; deprecated as of Android 7.0+ due to platform restrictions.
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java-diff-utils
Diff Utils library is an OpenSource library for performing the comparison / diff operations between texts or some kind of data: computing diffs, applying patches, generating unified diffs or parsing them, generating diff output for easy future displaying (like side-by-side view) and so on.
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When making a custom OWL file, if you are new to using OWL, we advise you to use WebProtégé, since its UI is simpler and less overwhelming. Advanced users should use https://protege.stanford.edu/. It lets you use more of the systems functions, which are not present in the web version.
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greenrobot-common
General purpose utilities and hash functions for Android and Java (aka java-common) (by greenrobot)
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vector-compat
A support library for VectorDrawable and AnimatedVectorDrawable classes introduced in Lollipop
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Android-Templates-And-Utilities
Collection of source codes, utilities, templates and snippets for Android development.
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 Utility discussion
Java Utility related posts
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Audit System - NewStarT (Custom OWL)
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Gephi – The Open Graph Viz Platform
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GraphRAG : From Zero to Hero
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Are you really wasting your time in Java without these 10 libraries?
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JavaChecks VS Guava - a user suggested alternative
2 projects | 28 Sep 2025 -
For visualization of network graphs, Gephi was ahead of its time
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Async Queue – One of My Favorite Programming Interviews (Can AI Break It?)
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A note from our sponsor - SaaSHub
www.saashub.com | 6 Jun 2026
Index
What are some of the best open-source Utility projects in Java? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | Guava | 51,481 |
| 2 | Arthas | 37,337 |
| 3 | StatusBarUtil | 8,773 |
| 4 | Gephi | 6,526 |
| 5 | hawk | 4,064 |
| 6 | ASimpleCache | 3,665 |
| 7 | ReLinker | 3,306 |
| 8 | bucket4j | 2,758 |
| 9 | JavaVerbalExpressions | 2,624 |
| 10 | joda-time-android | 2,616 |
| 11 | OpenKeychain | 2,554 |
| 12 | AndroidProcesses | 1,807 |
| 13 | easydeviceinfo | 1,784 |
| 14 | Embulk | 1,781 |
| 15 | cling | 1,779 |
| 16 | datafaker | 1,770 |
| 17 | AutobahnAndroid | 1,534 |
| 18 | java-diff-utils | 1,531 |
| 19 | Protégé | 1,375 |
| 20 | greenrobot-common | 1,353 |
| 21 | minio-java | 1,300 |
| 22 | vector-compat | 1,216 |
| 23 | Android-Templates-And-Utilities | 1,104 |
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