opensourcebeer
Footballguy
I've had good experiences using the Droidippy Android app. Its a pretty a great way to get a game of Diplomacy played without crushing the souls of your board gaming friends/family. For those not familiar:
http://grantland.com/features/diplomacy-the-board-game-of-the-alpha-nerds/
http://grantland.com/features/diplomacy-the-board-game-of-the-alpha-nerds/