Platform: Linux, OS X, Windows
Programing language: Ruby
First release: 2013
Discourse – an open source discussion platform built for the next decade of the Internet. It can be used as a mailing list, discussion forum or long-form chat room.
Discourse breaks with existing schemes of present forum applications by including additional features that are available mainly for social networking applications. These features include, among others: scrolling, live updates, oneboxing, expandable links, and the ability to drag and drop attachments. Although these options are more social than technical, they improve the quality of online discussions through the extended database of forum applications.
The application is (or was) used by companies and organizations such as: Atom (word processor), Boing Boing, CISCO, Docker, How-To Geek, Mozilla, Open Knowledge, SitePoint Forums, TalkSurf, The Daily WTF, Twitter, Ubuntu.
The project founders in 2013 were: Jeff Atwood, Robin Ward and Sam Saffron