3D Virtual Tabletop
It is a virtual tabletop application that allows you to play pen & paper roleplaying games, as well as strategy/board games with others, as you would sitting around a real table, limited only by your imagination.
Roll20
Roll20 is the free, easy way to play tabletop games (such as pen and paper RPGs) online with others. It's completely web-based, so it runs right in your browser.
Also features a 2d content marketplace.
