Phorum is described as 'Is open source forum software with a penchant for speed. Phorum's very flexible hook and module system can satisfy every web master's needs' and is a customer feedback manager in the business & commerce category. There are more than 25 alternatives to Phorum for a variety of platforms, including Self-Hosted, Web-based, Linux, Mac and Windows apps. The best Phorum alternative is Flarum, which is both free and Open Source. Other great apps like Phorum are phpBB, Simple Machines Forum, MyBB and NodeBB.
With Instaforum, you can build a forum website that's as simple and usable as a modern messaging app. It can be public or private, and users don't have to install anything. It's easy to set up, runs on your domain with your branding, and you control your data.
United Kingdom
FUDforum (Fast Uncompromising Discussion Forum) is a free and open source web discussion forum. FUDforum combines an extensive feature set while maintaining the ability to generate forum web pages extremely fast.
ForumWP is the best forum plugin for WordPress. Use ForumWP to add a forum to your website and create an online community.
AsmBB is high performance web forum software, written entirely in assembly language. It is very lightweight, but provides decent set of features and ultimate performance.
uCoz is a free website-builder that includes hosting and a website management system. uCoz works according to the principles of Web 2.0 and allows creating of the most complicated projects with extraordinary simplicity and speed.
Russia
miniBB is a standalone, open source program for building your own Internet forum. If you want a lite, simple and stable message board attached to your existing website at the very high integration level, which may include the full customization of the layout to the look of your...
Bulletin Board is new modern forum software that allow you build a professional forum
PunBB is a fast and lightweight PHP-powered discussion board. It is released under the GNU General Public License.
YaBB is a free Perl forum (bulletin board) system that has rivaled professional message boards for years. YaBB provides chat for visitors where they can post any time and reply to anyone!.
LayerBB is a small yet feature rich community software which enables you to quickly and easily start your own community. It offers great flexibility and easily customisable.
United States
