vBulletin

vBulletin is commercial software for creating and running discussion forums. Written in PHP and based on a database, it was for years one of the most popular platforms of its kind, used by large online communities, portals and technical support sites.

How vBulletin works

vBulletin is installed on a web server with PHP and database support, much like other applications of its class. It organises content into categories, forums and threads, and handles user accounts, permissions, moderation, private messages and rank and reputation systems. Its appearance and features can be extended with themes and add-ons, allowing the forum to be tailored to a specific community's needs.

vBulletin compared to other solutions

Unlike free, open-source forum platforms, vBulletin is a commercial product — it requires purchasing a licence but, in return, is intended to provide vendor support, regular updates and a polished set of tools. It is not a general-purpose CMS like WordPress, but a specialised platform focused solely on community discussion. Running vBulletin requires suitable hosting with resources matched to the forum's scale and, under heavy traffic, caching mechanisms and database optimisation. Although the forum market changed with the rise of social media, dedicated platforms such as vBulletin still find use wherever a lasting, well-moderated discussion space centred on a specific topic is needed — where community and the quality of discussion are ends in themselves rather than an add-on to other content.