Simple Machines Forum
Simple Machines offers free open source software such as SMF, the powerful and easy to use community forum written in PHP. Start interesting discussions on your website!
17 Alternatives To Simple Machines Forum
ArmorForums
Platform for creating free private forums on a subdomain and cloud hosted software developed and maintained by ArmorForums.
Discourse
Discourse is an open source discussion platform built for the next decade of the Internet.
Flarum
Flarum is the next-generation forum software that makes online discussion fun. It’s simple, fast, and free.
Flatboard
A Simple, Lightweight, Modern and Fast flat-file forum system written in PHP and Json.
Forumbee
Forumbee offers community forums for discussions, feedback and Q&A.
Invision Community
Invision Community is a flexible, integrated set of apps for building communities on the web.
MyBB
MyBB is a discussion board software that runs on PHP and MySQL
Proboards
ProBoards is a host of free forums with customer service.
QuickTopic
Free hosted message boards, public or private. E-mail enabled.
Vanilla
Vanilla is a free Mac app that lets you hide icons from your menu bar.
XenForo
Intuitive. Social. Engaging. Fast. XenForo brings a fresh outlook to forum software.
Yuku
Yuku is a universe of free social networking communities united by people and their passions.
bbPress
bbPress is forum software with a twist from the creators of WordPress.
miniBB
miniBB is a standalone, open source program for building your own Internet forum.
vBulletin
Build a community website with the leading forum software, vBulletin 5 Connect, or in the cloud on vB Cloud!