Free implementation of Play Services
Programmer-friendly testing framework for Java and the JVM
Java MQTT lightweight broker
A cross-platform G-Code sender for GRBL, Smoothieware, etc.
Fast, scalable, multi-language and extensible build system
The OWASP ZAP core project
Comprehensive programming and configuration model for modern apps
A quality control analysis tool for high throughput sequencing data
Generate diagrams from textual description
Flexible, lightweight multi-language test reporting tool
Most popular Mocking framework for unit tests written in Java
Google maps for block game
SoapUI is a free and open source cross-platform functional testing
Metaprogramming library to analyze and transform Java source code
Kafka Web UI
Hibernate's core object/relational mapping functionality
Automated driver management and helper features for Selenium WebDriver
Java library for creating and manipulating vector geometry.
Magic Another Game Engine
Test automation made simple
signal-cli provides a commandline, dbus and JSON-RPC interface
Set of ecommerce systems, including the front-end and back-end
An XMPP server licensed under the Open Source Apache License
TestNG testing framework
Open source routing engine for OpenStreetMap