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Top 23 Java IntelliJ Projects
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Project mention: Show HN: I wrote a Java decompiler in pure C language | news.ycombinator.com | 2025-06-03
I don't think it's available in a standalone repo but it IS available as a standalone library, IntelliJ's FernFlower decompiler is the gold standard https://github.com/JetBrains/intellij-community/blob/master/... https://www.jetbrains.com/intellij-repository/releases
I guess there's some history there that I'm not familiar with because JBoss also has a FernFlower decompiler library https://mvnrepository.com/artifact/org.jboss.windup.decompil...
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InfluxDB
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.
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Deeplearning4j
Suite of tools for deploying and training deep learning models using the JVM. Highlights include model import for keras, tensorflow, and onnx/pytorch, a modular and tiny c++ library for running math code and a java based math library on top of the core c++ library. Also includes samediff: a pytorch/tensorflow like library for running deep learn...
Kotlin can use any Java library, giving you access to powerful machine learning frameworks like DeepLearning4J, Smile, and Weka.
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manifold
Manifold is a Java compiler plugin, its features include Metaprogramming, Properties, Extension Methods, Operator Overloading, Templates, a Preprocessor, and more.
Project mention: My Database Is My Application: Rethinking Webhook Logic with DuckDB and SQL | news.ycombinator.com | 2025-06-30Yep. Using DuckDB against conventional data sources such as JSON and CSV or even Parquet has amazing potential. Paired with manifold[1]--a Java library that makes it all type safe--and it's a game changer.
1. https://github.com/manifold-systems/manifold/blob/master/doc...
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Project mention: Tell HN: An update on your Google Maps Timeline | news.ycombinator.com | 2025-03-21
I've since enabled https://github.com/mendhak/gpslogger/ which I sync over to my home server using syncthing.
Also see https://github.com/Freika/dawarich/wiki/How-to-track-your-lo...
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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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Swagger Plugin for JetBrains
A plugin to help you easily edit Swagger and OpenAPI specification files inside IntelliJ IDEA
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fabric-loom
Gradle build system plugin used to automate the setup of a minecraft mod development environment.
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Project mention: DDEV and PhpStorm's NodeJS Remote Interpreter for ESLint, Prettier, Tailwind, etc. | dev.to | 2025-02-27
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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 IntelliJ discussion
Java IntelliJ related posts
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My Database Is My Application: Rethinking Webhook Logic with DuckDB and SQL
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Show HN: Toward Nirvana with Optional Parameters
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Kotlin for AI-Powered App Development
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CLion Is Now Free for Non-Commercial Use
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Growing a Language, by Guy Steele [pdf]
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Tell HN: An update on your Google Maps Timeline
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JetBrains Fleet drops support for Kotlin Multiplatform
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A note from our sponsor - Stream
getstream.io | 14 Jul 2025
Index
What are some of the best open-source IntelliJ projects in Java? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | intellij-community | 18,156 |
| 2 | Deeplearning4j | 14,038 |
| 3 | IntelliJ-Key-Promoter-X | 3,082 |
| 4 | manifold | 2,578 |
| 5 | gpslogger | 2,193 |
| 6 | phpinspectionsea | 1,464 |
| 7 | intellij-sdk-code-samples | 1,198 |
| 8 | Swagger Plugin for JetBrains | 1,180 |
| 9 | jte | 979 |
| 10 | intellij | 795 |
| 11 | intellij-erlang | 745 |
| 12 | Grammar-Kit | 742 |
| 13 | StringManipulation | 729 |
| 14 | packetevents | 691 |
| 15 | samples | 629 |
| 16 | darklaf | 451 |
| 17 | Perl5-IDEA | 411 |
| 18 | fabric-loom | 285 |
| 19 | java-oo | 273 |
| 20 | MavenHelper | 266 |
| 21 | downlords-faf-client | 203 |
| 22 | intellij-quarkus | 126 |
| 23 | ddev-intellij-plugin | 125 |
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www.influxdata.com