Event Driven Orchestration & Scheduling Platform for Mission Critical Applications

Desktop/Android/HTML5/iOS Java game development framework

JDK main-line development https://openjdk.org/projects/jdk

A high performance caching library for Java

QuestDB is a high performance, open-source, time-series database

Open source alternative to Auth0 / Firebase Auth / AWS Cognito

A Java API for generating .java source files.

A compact and highly efficient workflow and Business Process Management (BPM) platform for developers, system admins and business users.

Free and open log management

Statistical Machine Intelligence & Learning Engine

The simple, stupid rules engine for Java

Apache Ignite

MapDB provides concurrent Maps, Sets and Queues backed by disk storage or off-heap-memory. It is a fast and easy to use embedded Java database engine.

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.

WildFly Application Server

Thymeleaf is a modern server-side Java template engine for both web and standalone environments.

Flexible tool to build planet-scale vector tilesets from OpenStreetMap data fast

The modular web framework for Java and Kotlin

MongoDB object-document mapper in Java based on https://github.com/mongodb/mongo-java-driver

The most advanced ORM of JVM, for both java & kotlin

Ebean ORM

Reactive Extension (Rx) Adaptor for Netty

Elegant parsing in Java and Scala - lightweight, easy-to-use, powerful.

sql2o is a small library, which makes it easy to convert the result of your sql-statements into objects. No resultset hacking required. Kind of like an orm, but without the sql-generation capabilit…

Lightweight Java State Machine

Apache Wicket - Component-based Java web framework

Java bindings for Skia

The simple, stupid batch framework for Java

Query in Java as in Mongo shell

A low-level integer compression library in Java