http://www.lackeyccg.com
It's in beta, but basically, you download the plugin for the card-game you wish to play.
The program then literally gives you a table. So if you know how to play the game in real life then your fine. You just manipulate things the same way.
Makes it good to play vs other people online in pretty much any card-game going.
But yes, in beta, and isn't really been advertised that much yet as there are still lots of bugs.