Mybema
Mybema is a free and open source online community platform built using Ruby on Rails. It allows you to run and manage a self-hosted community that you control.
Vanilla
Vanilla provides a standards-compliant, multi-lingual, theme-able and pluggablecommunity forum software that powers discussion ...
Discourse
Discourse is an open source discussion platform built for the next decade of the Internet. A modern forum, everything's been r ...
Rootbuzz
Rootbuzz is a hosted Q&A platform (ie your own quora/stackoverflow). It helps you grow and strengthen your community & ...