A Java math library focused on number theory and integer factorization in particular.

A general-purpose add-on library for jMonkeyEngine (code has New BSD license)

A 3d math package in java with vector, matrix and quaternion methods well Documented

Quaternion and Vector3 libraries implementation in Java

Here is a beautiful util-library for all Java users

A library of geometric representations

An Android Calculator-App for quaternions

A simple GUI in Java to demostrate rotation in 3D space using the mathematical concept of quaternions.

Quaternion class for Java. Includes ability to rotate vectors in 3d.

Voxel renderer and game engine experiment