Virtual Tabletop Gaming

A buddy of mine is interested in running some long-distance tabletop RPG games over the internet. He's proposing using one of two solutions: WebRPG, which is a closed-source Java-based offering, and OpenRPG, which is an open-source Python-based offering. He's already identified a crashing bug on the Mac in one of them, but it's still too early to tell which is better. If you have experience with either, please post comments.