An Internet forum, or message board, is an online discussion site where people can hold conversations in the form of posted messages
Discourse is the 100% open source discussion platform
The server side of Discourse is Ruby on Rails backed by a Postgres database and Redis cache. You can deploy our standard Discourse Docker container on any virtualized cloud server (digital ocean, amazon ec2, rackspace, azure) with 1 GB RAM.
SMF is all that in one package, giving you an easy to use forum with many
powerful features for you as well as your users. SMF is an open-source project
made by volunteers from across the world.