xkcd

Discussion board for the massively popular xkcd web comic. Covering everything from Maths and Science to Logic Puzzles and Forum Games. Over 100k members and 2.4 Million posts.

Solia Online

Solia Online is one of the most active online communities with over 18 million posts. Solia Online allows you to create your own avatar, buy items, and discuss topics with your friends.

Synology

Support for Synology NAS devices and ideas for future versions of the DiskStation software.

VideoLAN

The VideoLAN project produces the extremely popular VLC media player software. Their forums provide support for users of the software as well as the development community.

Info-Mac

Info-Mac is a community dating back to 1984 as a mailing list and was the first online community for Apple's Macintosh computer. All of their content was converted to phpBB in 2007.

KDE

KDE is mainly known for producing the KDE Desktop Environment (used in Kubuntu) for Linux.

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