Overview of vBulletin

vBulletin is a powerful commercial forum software written in PHP. The software is built to be easily extended through plguins and customized with themes. vBulletin is used to power many of the largest forum, communities and social site across the web. Over 100,000 sites are currenty powered by vBulletin.

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People have also recommended 7 vBulletin Alternatives and 0 vBulletin Pros & Cons thus far.