Top 3 jme3 open source projects

Jmonkeyengine
A complete 3-D game development suite written in Java.
jme3-utilities
Reusable code and assets for jMonkeyEngine games (code has New BSD license)
SiO2
Base pack of useful reusable game code that can help bootstrap any JME game project.
1-3 of 3 jme3 projects