Over on vassalengine.org, you can find "a game engine for building and playing online adaptations of board games and card games. Play live on the Internet or by email. Vassal runs on all platforms, and is free, open-source software." Learn more here.
Also, on hpssims.com, check out Aide de Camp 2. It "is the long awaited sequel to the ultimate gamer's tool for converting all those old boxed games into a fully playable computer version intended for Play-by-E-mail (PBEM). While designed primarily for wargames, ADC2 is flexible enough to handle any game or application where moveable "pieces" are placed on top of some sort of schematic base. It can handle games as diverse as the complex wargame Grand Europa, to every kid's favorite Chutes and Ladders, or even Scrabble." Find out more here.
Finally, on wargamer-aide-de-camp.com, and not to be confused with the second of the above online wargaming tools, have a look at Wargamer Aide de Camp, "a unique statistic and status display stand for wargames and games" here or on their Facebook page here.