AIMA-Java Core Algorithms from the book Artificial Intelligence a Modern Approach 3rd Ed.

JMockit is a Java toolkit for developer (unit/integration) testing. It contains mocking APIs and other tools, supporting both JUnit and TestNG.

This library enables Java applications to work with property lists in various formats. Supported formats for reading and writing are OS X/iOS binary and XML property lists.

charts4j is a free, lightweight charts and graphs Java API. It enables developers to programmatically create the charts available in the Google Chart API through a straightforward and intuitive Java API.

Very simple command-line shell for Java applications

FMPP Maven Mojo

Maven plugin to validate localization resources in Java properties files

The repeated implementation of the listener pattern for Java is a boring task which cannot be easily abstracted. Events-On-Fire is a way to get rid of this.

Automated discovery for multi-module builds.

This is a java library to help with the creation and use of Hypermedia entities as specified by the Siren hypermedia specification. See https://github.com/kevinswiber/siren for more detail on the specification.