JGiven is a developer-friendly BDD tool for Java. Developers write scenarios in plain Java using a fluent, domain-specific API, JGiven generates reports that are readable by domain experts.
Nakadi is a distributed event bus broker that implements a RESTful API abstraction on top of Kafka-like queues.
Exercism is a way to quickly ramp up in new programming languages. This repository features exercism exercises in Java.
In a nutshell Jenkins CI is the leading open-source continuous integration server. Built with Java, it provides over 300 plugins to support building and testing virtually any project.
OrientDB is an Open Source NoSQL DBMS with both the features of Document and Graph DBMSs.
This is the project website for the TEAMMATES feedback management tool for education https://teammatesv4.appspot.com/
Open Source, Distributed, RESTful Search Engine
Ratpack is a high-throughput, non-blocking web framework for the JVM.
VR Framework on Android that supports both Oculus Mobile SDK and Google DayDream. (gearvrf.org)
A "standard library" of community contributed procedures and functions for the open-source graph database Neo4j
The AWS SDK for Java enables Java developers to easily work with Amazon Web Services.
Fast Java routing engine for roads and more. GraphHopper is Open Source and uses OpenStreetMap.
The Apache JMeter™ application is open source software, a 100% pure Java application designed to load test functional behavior and measure performance.
Open source build-test-release cycle automation.