Flarum is free, open-source forum software with a focus on simplicity. You can use Flarum to easily set up a discussion forum for your website. Flarum is developed openly on GitHub.
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The best open source alternative to Discourse is Flarum. If that doesn't suit you, our users have ranked more than 50 alternatives to Discourse and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Discourse are phpBB, NodeBB, Vanilla Forum and Simple Machines Forum.
Flarum is free, open-source forum software with a focus on simplicity. You can use Flarum to easily set up a discussion forum for your website. Flarum is developed openly on GitHub.




Since its creation in 2000, phpBB™ has become the most widely used Open Source forum solution. Like its predecessors, phpBB™ 3.2 “Rhea” has an easy to use administration panel and a user friendly installation process, which allows you to have a forum set up in minutes.




A community forum allows you to engage and retain customers, keeping them interested and up-to-date with your latest product or service.




Vanilla provides a standards-compliant, multi-lingual, theme-able and pluggablecommunity forum software that powers discussion forums on 800,000 sites.


Simple Machines Forum — SMF in short — is a free, professional grade software package that allows you to set up your own online community within minutes.

bbPress is forum software with a twist from the creators of WordPress. Its focused on web standards, ease of use, ease of integration, and speed. bbPress will try to keep things as small and light as possible while still allowing great add-on feature possibilities.

MyBB is the free and open source, intuitive, extensible, and incredibly powerful forum software you've been looking for.



Open Social is a purpose-built community engagement platform. Developed on top of a powerful open-source Drupal technology framework, Open Social allows organizations to create a central online hub for their members.



Q&A platform software for teams at any scale. Whether it's a community forum, help center, or knowledge management platform, you can always count on Apache Answer.




FluxBB is a fast, light, user-friendly forum application for your website. FluxBB was designed as a lighter, faster alternative to some of the traditional feature heavy forum applications. It is easy to use and has a proven track record of stability and security making it an...


