MyBB 1.6.8
3268 votes cast
MyBB is a powerful, efficient and free forum package developed in PHP and MySQL. MyBB has been designed with the end users in mind, you and your subscribers. Full control over your discussion system is presented right at the tip of your fingers.phpBB 3.0.10
1565 votes cast
phpBB is a high powered, fully scalable, and highly customizable Open Source bulletin board package. phpBB has a user-friendly interface, simple and straightforward administration panel, and helpful FAQ.SMF 2.0.6
1475 votes cast
Elegant. Effective. Powerful. Free. SMF is all of the above. SMF is a next-generation community software package and is jam-packed with features, while at the same time having a minimal impact on resources. And, yes, it is free.PunBB 1.4.2
498 votes cast
PunBB is a fast and lightweight PHP-powered discussion board. It is released under the GNU General Public License. Its primary goals are to be faster, smaller and less graphically intensive as compared to other discussion boards.Vanilla 2.0.18.4
453 votes cast
With Vanilla we wanted to break the mold created and followed by just about every other forum on the web. We sat down and thought about what we liked, and more importantly, what we didn't like about web forums.Phorum 5.2.18
447 votes cast
Phorum is a web based message board written in PHP. Phorum is designed with high-availability and visitor ease of use in mind. Features such as mailing list integration, easy customization and simple installation make Phorum a powerful add-in to any...UseBB 1.0.15
390 votes cast
UseBB is a light and Open Source PHP and MySQL based forum package, distributed freely under the GPL license. Developed with simplicity and usability in mind, UseBB is ideal for small to medium sized websites which need a clear and efficient forum packageXMB 1.9.11.13
302 votes cast
XMB is a lightweight PHP forum software with all the features you need to support a growing community. With outstanding community support and contribution, you will find XMB to be easy to setup, customize, and enhance.MyLittleForum 2.3
236 votes cast
my little forum is a simple PHP and MySQL based web-forum that displays the messages in classical threaded view. It's Open Source licensed under the GNU General Public License. The main claim of this forum script is simplicity.FluxBB 1.5.0
217 votes cast
FluxBB is a fast, light, user-friendly forum application for your website.PBBoard 2.1.4
197 votes cast
PBBoard: Power bulletin board.Simple, Fast, and very secure Open source php program.
196 votes cast
FUDforum is a super fast and scalable discussion forum. It is highly customizable and supports unlimited members, forums, posts, topics, polls & attachments. It can import XML Feeds and sync with USENET groups and Mailing Lists (bi-directional).Viscacha 0.8.1.1
184 votes cast
Viscacha is a free bulletin board system with an integrated CMS. The intention of the software engineers is to combine the current standards with new and user friendly features. The system supports packages for easily extending the core system.OmegaBB 0.9.3
173 votes cast
OmegaBB brings AJAX thinking to forum software, making a realtime forum unlike all others. Feature-rich, with over 100 configuration options and a plain-spoken source code, it is a platform ready to be customized to your liking.Dove Forums 1.0.3
128 votes cast
Dove Forums is a Open Source Discussion Forums Software built on the Codeigniter framework. We built it for speed, simplicity and usability.Elite Bulletin Board 2.1.23
120 votes cast
Elite Bulletin Board is an advanced Bulletin Board program that provides advanced features such as CAPTCHA, sub-board, skinning ability, multilingual, commercial password encryption, and much more.KaiBB 2.0.1
115 votes cast
KaiBB is a free bulletin board system written in php and powered by a mysql database.Designed to be the balance of easy to use and powerful, this software has everything you need to run your own forum based website.
Source :opensourcecms.com