ParticipateDB

From the FAQ : What is Discourse? Discourse is the 100% open source discussion platform built for the next decade of the Internet. It works as: * mailing list * discussion forum * long-form chat room What’s different about it? Discourse is a from-scratch reboot, an attempt to reimagine what a modern, sustainable, fully open-source Internet discussion platform should be today – both from a technology standpoint and a sociology standpoint.