VASSAL Engine
From Wikipedia, the free encyclopedia
The VASSAL Engine is a game engine for building and playing online adaptations of board games and card games. It allows users to play in real time over a live internet connection (in addition to playing by email). It runs on all platforms, and is free for personal use. For example, there is a Star Wars Miniatures module, where players can play with up to three others in a digital replica of the table-top game.
It is written in Java and is available from Sourceforge under the LGPL open source license.