Top JAVA GitHub Repositories & Tools (2026)

Apache Drill is a distributed MPP query layer for self describing data

Flutter Plugin for IntelliJ

Riding carousels with jQuery.

Zenko CloudServer, an open-source Node.js implementation of the Amazon S3 protocol on the front-end and backend storage capabilities to multiple clouds, including Azure and Google.

A toolbox for displaying and modifying diagrams on the web.

Discord4J is a fast, powerful, unopinionated, reactive library to enable quick and easy development of Discord bots for Java, Kotlin, and other JVM languages using the official Discord Bot API.

Elixir plugin for JetBrain's IntelliJ Platform (including Rubymine)

Open source requirement tracing suite

An enterprise-grade Java-based, Apache 2.0 licensed Ethereum client https://github.com/besu-eth/besu/wiki

The headless Chrome/Chromium driver on top of Puppeteer. Take screenshots, generate PDFs, extract text and HTML with a production-ready API.

Distributed Big Data Orchestration Service

OwnTracks Android App

Fully async, multithreaded, predictive, open source, 3.01 reach, 1.005 timer, 0.01% speed, 99.99% antikb, "bypassable" 1.8-1.21 minecraft anticheat.

PLC4X The Industrial IoT adapter

Free, open source mental health communication web app to share experiences with loved ones

Spring Integration provides an extension of the Spring programming model to support the well-known Enterprise Integration Patterns (EIP)

GraphQL (TypeScript) module for Nest framework (node.js) 🍷

Nessie: Transactional Catalog for Data Lakes with Git-like semantics

Open source Java implementation for Raft consensus protocol.

Hop Orchestration Platform