XMB Forum

XMB is a fully scalable, highly customizable Open Source message board software. XMB has a user-friendly interface, simple set up, stable performance, and tons of features. Based on the powerful PHP language and the MySQL database, XMB is a very powerful combination, suitable to everyone's needs.

Homepage: http://www.xmbforum.com/
Disk Space: 4.8 MB
Support Forum: http://forums.xmbforum.com/
License: GPL