An open-source version of the ArsDigita Community System, comprised of a Web server plus PostgreSQL database. Free download, documentation, FAQ, forums, links to existing sites using this solution. [Unix, source]

WWW discussion board software package that can be installed on a Unix or Windows 95/98/NT web server. Installation takes about 15 minutes and does not require hand-editing of the script files. Free and paid versions available.

CGI/Perl software for message boards, chat, survey, and files and links submission. Installs with one file. Very integrated. Includes support for templates and user profiles. Commercial.

Simple CGI-based messaging. Includes option to ban bad words. Site does not work in Netscape 3 or 4.

Shareware discussion forum package allows polls, moderation, email notification, password protection. Built-in search engine. Features, requirements, registration information, working demos.

A bulletin board message system. It's free for non commercial use and run at WinNT, Solaris, Linux, FreeBSD.

Commercial software suitable for private and public uses. Runs on IIS with a Microsoft SQL Server backend.

ISAPI server application. Discussion forum for MS IIS running on Windows NT/2000/XP. Shareware. Highlights, installation instructions, FAQ, examples of this forum in use.

CGI application that implements discussions on a website.