2655 repositories for Java

Design patterns implemented in Java

All Algorithms implemented in Java

Termux - a terminal emulator application for Android OS extendible by variety of packages.

Jenkins automation server

Apache RocketMQ is a cloud native messaging and streaming platform, making it simple to build event-driven applications.

Ecosystem to transform any database into a distributed database system, and enhance it with sharding, elastic scaling, encryption features & more

OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)

Quarkus: Supersonic Subatomic Java.

An open source time-series database for fast ingest and SQL queries

Apache ZooKeeper

The OWASP ZAP core project

Open source alternative to Auth0 / Firebase Auth / AWS Cognito

Views and Drawable for displaying animated GIFs on Android

Feign makes writing java http clients easier

High performance Spigot fork that aims to fix gameplay and mechanics inconsistencies

No clever tagline needed.

Testcontainers is a Java library that supports JUnit tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.

🔎 Open source distributed and RESTful search engine.

Free and open log management

Modifications to the Minecraft base files to assist in compatibility between mods.

Open-Source Web UI for Apache Kafka Management