Flow

Simple, general purpose rendering API with an LWJGL implementation and utilities.

Command-line parsing library that supports positional arguments, flags, subcommands, tab-completion, and more.

A commons library for Java that provides reusable components for Flow libraries.

Networking library for the Flow collection.

Flexible serialization and configuration library.

Extensible and modular library for Java that provides a plugin framework for Java-based plugins that are loaded separately from the main codebase at runtime.

Real-time physics library for Java, based on the ReactPhysics3D (https://code.google.com/p/reactphysics3d/) library by Daniel Chappuis (http://www.danielchappuis.ch/).