Axion

Java Apache License 2.0
Axion is a Java library for manipulating NBT. Axion can use multiple configurations and supports the original spec and a custom extended spec right out of the box. The library provides an interface that can easily be extended to add NBT serialization support to your custom classes and object to NBT mapper utilities that can be registered with Axion when implementation of the aforementioned interface is impossible.

Joise

Java Apache License 2.0
Joise is a 2D, 3D, 4D and 6D modular noise library written in Java. Joise was derived from Joshua Tippetts' C++ Accidental Noise Library to facilitate the creation of complex noise functions from chained modules, and represent the chained modules in a consistent, ordered format for serialization.

SudoMath

Java Apache License 2.0
SudoMath is a collection of math classes used at SudoPlay Games. Features include: