Repository Index

A small Android library allowing you to have a smooth and customizable horizontal or circular indeterminate ProgressBar

Official GeoServer repository

• web
• mapping
• web-mapping
• java

Decompiler from Java bytecode to Java, used in IntelliJ IDEA.

• java
• decompiler
• reverse-engineering

OpenPDF is an open-source Java library for creating, editing, rendering, and encrypting PDF documents, as well as generating PDFs from HTML. It is licensed under the LGPL and MPL.

• pdf
• pdf-generation
• java
• itext

A complete 3-D game development suite written in Java.

• jmonkeyengine3
• jmonkeyengine
• java
• hacktoberfest

Agentic Orchestration Platform

• microservices
• orchestration-framework
• workflow-engine
• java

FlatLaf - Swing Look and Feel (with Darcula/IntelliJ themes support)

• look-and-feel
• swing
• java-swing
• flatlaf

Alibaba Dragonwell8 JDK

• dragonwell8
• java
• openjdk
• jdk

A lightweight indicator like in nexus 5 launcher

A TextView that automatically resizes text to fit perfectly within its bounds.

Java bytecode engineering toolkit

• java-bytecode
• java

The official AWS SDK for Java 1.x (In Maintenance Mode, End-of-Life on 12/31/2025). The AWS SDK for Java 2.x is available here: https://github.com/aws/aws-sdk-java-v2/

• aws-sdk
• java
• aws
• amazon

PowerMock is a Java framework that allows you to unit test code normally regarded as untestable.

• java
• testability
• testing
• mocking

Distributed Peer-to-Peer Web Search Engine and Intranet Search Appliance

• decentralized
• p2p
• p2p-network
• privacy

XChange is a Java library providing a streamlined API for interacting with 60+ Bitcoin and Altcoin exchanges providing a consistent interface for trading and accessing market data.

• bitcoin

Awaitility is a small Java DSL for synchronizing asynchronous operations

• awaitility
• asynchronous
• java
• testing

Traditional roguelike game with pixel-art graphics and simple interface

Make the model your single source of truth. Erupt is a model-driven engine for enterprise apps: UI, REST APIs, RBAC, data and AI agents are built from one model at runtime — no codegen, no frontend. Java/Kotlin on Spring Boot, Solon, Quarkus & more; SDKs for Python, Go, TypeScript and 6 other languages.

• annotation
• erupt
• low-code
• mdd

SpotBugs is FindBugs' successor. A tool for static analysis to look for bugs in Java code.

• findbugs
• static-analysis
• code-analysis
• static-code-analysis

A better compressed bitset in Java: used by Apache Spark, Netflix Atlas, Apache Pinot, Tablesaw, and many others

• java
• bitset
• roaring-bitmaps
• roaringbitmap

[DEPRECATED] Android floating action button

These are the sample Bounded Contexts from the book "Implementing Domain-Driven Design" by Vaughn Vernon: http://vaughnvernon.co/?page_id=168

Terasology - open source voxel world

• java
• game
• voxel
• sandbox

A Java architecture test library, to specify and assert architecture rules in plain Java