Joomla Forums

Joomla is one of the leading open-source Content Management Systems. With a userbase of over 400,000, they use phpBB as a reliable platform for support.

Mozillazine

Hugely popular Mozilla community providing support for Firefox, Thunderbird, Seamonkey and other well known Mozilla products. Over 350k members and 4 Million posts.

OpenOffice.org

OpenOffice.org offers a free and fully-featured office suite which meets the needs of the common consumer all the way up to large enterprises.

NationStates

Inspired by Max Berry's book, Jennifer Government, NationStates is one of the most popular online simulation games. The forum boasts over 5 million posts and 200,000 users.

Forex Station

Professional online broker and trading community.

Open Cart Forums

OpenCart is popular, powerful, and easy to use shopping cart software. Their healthy community forums are powered by phpBB.

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