The Sun Game Server is the first product released from Project Darkstar. It is a online gaming engine that scales massivly and comes with a rich set of client APIs. You can get the EA bits here:
https://games.dev.java.net/.
Update: The final web site for Darkstar is going to be http://www.projectdarkstar.com - Thanks to Jeff Kesselman for pointing this out.
Tags:
Online Gaming,
Darkstar