Roll20 is a place to play your favourite tabletop adventure games like Dungeons and Dragons in your browser with your friends. So if you’ve been dreaming of playing with your friends around the world, now you can. There is no need for custom software since it’s all HTML5.
Roll20 is the easy-to-use virtual tabletop that brings pen and paper gaming to the web the right way. Built on a powerful platform of tools, yet elegantly simple, it focuses on enhancing what makes tabletop gaming great: storytelling and camaraderie. It’s incredibly user friendly, and runs right in your web browser, so there’s nothing to download or configure.
The site has been around for about a year now and I have no idea how I missed it. It was generously Kickstarted last year and was made by a bunch of Redditors.