PunBB

PunBB is a discussion forum very light and fast, licensed under the GNU General Public License. Its primary objectives are to be faster, smaller and less graphically heavy discussion of other platforms. PunBB has fewer features than other forums, but is much faster, on semantically correct XHTML. The system requires an engine of PHP and a SQL database. Currently, PunBB supports MySQL, PostgreSQL and SQLite as a database.

Invision Power Board

Excellent script commercial (non open source) to create a forum with many features

http://www.invisionboard.com/

Work in progress

phpBB 2.0.21 is an open source software distributed under the GPL free to create your own forum with the functions that a forum should have, and one of the most known and used in open source, others are (YaBB written in perl, php SMF, Phorum, MYBB, VANILLA, XMB, bbPress, EASYFORUM, PUNBO, TINYPORTAL, MINIBB, WBBLITE in Ayax ORCAFORUM are free! while shopping recommend vBulletin, IPB, WoltLab, etc. ..)

Returning to phpBB in this release are several improvements were made, fixed some minor bugs and improved performance, you may download it from here downloads phpBB 2.0.21 recommend that you update all previous versions to all those who used the earlier versions. They come in many forms Added network to increase the functions of the forum itself such as a version that integrates TINYPORTAL phpbb style and a portal with news, calendar, forums, users, etc. ..

• Complete package - contains the entire phpBB2 English

• Code changes - it contains the instructions to update your previous version including the MOD.

Select the package that is best for you. Follow the instructions in the README file and INSTALL before installing or updating!.