Attached Link: http://www.phpbb.com/

If you're thinking of creating your own forum, I would have thought phpBB is a good place to start along side mySQL. It's what we use at work for a lot of our internal forums, and really doesn't need a great deal of config to get something working, leaves you to work at making it pretty!

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Toolset: Blender, GIMP, Indigo Render, LuxRender, TopMod, Knotplot, Ivy Gen, Plant Studio.