PunBB (PunBulletinBoard) is a lightweight PHP-based internet discussion board system released under the GNU General Public License. The project's primary goal is to be a faster, smaller and less graphic alternative to discussion boards such as phpBB, Invision Power Board or vBulletin.Ohloh Analysis Many open-source and commercial projects' discussion boards use PunBB. Until September 2011, Facebook's Developers were using Facebook Developer's Forum for discussions and bug reports, which was powered by PunBB.Facebook Developers' Forum
