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Implementation: Perl
PHPBB
One of the most popular open-source forum distributions. Used by many sites including RootTalk: http://root.cern.ch/phpBB3/. Does not support threaded discussions.
Implementation: PHP
FUDForum
Slightly more feature rich than phpbb (Open-source forum software: http://www.forummatrixfudforum.org/compare/FUDforum+phpBBforum/
). Already in use at SLAC for some forums like http://forum.linercollider.org/
Slightly more features than phpbb (http://www.forummatrix.org/compare/FUDforum+phpBB). The forum supports all of the features we want (and many more). We have not enabled ability to respond to topics via e-mail, since it requires setting up a new e-mail address for each forum, but it is supported and could be handled in the same way that we currently deal with hypernews forums.
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