Open source forum software based on PHP with permanent bans, member warnings, member preferences, private messaging, BBCode integration, attachment support, automatic image thumbnails, member polls and mass email notification
Forum software with unlimited members, integrated mobile app, file uploads, remote hosting, flood protection, BBCode integration, event calendar, private messaging, live chat, permanent bans and ranking system
Open source forum software with instant chat, member polls, social media Single Sign On, ranking system, BBCode integration, sub forum support, privated messaging and multiple attachment and file types
vBulletin pricing:2$$$$ = $29 or less $ $ = $30-$59 $ $ $ = $60 or more (for lowest plan)
Forum software with member polls and blogs, AJAX-based chat, support ticket forum, private messaging, unlimited moderators, BBCode integration, in-post HTML support, WYSIWYG editors, and attachment thumbnail support
Open source forum software with IP flood protection, unlimited member accounts, BBCode integration, member polls, and email subscriptions and notifications
Open source forum software with private messaging, member polls, event calendar, reputation system, member promotions, behavior warning system, and DBMS support
PlushForums pricing:3$$$$ = $29 or less $ $ = $30-$59 $ $ $ = $60 or more (for lowest plan)
Forum software with integrated blog, private messaging, member directory, paid subscriptions, live notifications, social media support, reputation system, Q&A support and 3rd party app integration
Vanilla Forums pricing:4$$$$ = $29 or less $ $ = $30-$59 $ $ $ = $60 or more (for lowest plan)
Forum software with Q&A support, member polls, rich content, mentions, BBCode and Markdown integration, WYSIWYG editor, member notifications, auto-save, private messaging, peer moderation, reputation system and 3rd party integration
Open source forum software with permission and user management, new and old topics tracking, IP locking for 'hammering' prevention, sub boards and expiration time for bans
Invision Community pricing:3$$$$ = $29 or less $ $ = $30-$59 $ $ $ = $60 or more (for lowest plan)
Forum software with Q&A format, one-click moderation, built-in support desk, premium subscriptions, drag and drop page editor, member albums, image protection and member and group blogs