BuildACommunity.com - Ecreations Software provides a collection of scripts for online communities, such as e-cards, forums, classifieds, chat, mailer and galleries. [Linux]
ESX Engineering - Ready-to-use software platform that delivers a total environment for development and management of community based sites.
Inchima - Software and portal solutions for online communities. Modules include discussion forums, content management, messaging and directories as well as custom components.
OpenACS (Open Architecture Community System) - Open-source toolkit for building scalable community-oriented web applications. Features a large database model of web collaboration, and over 70 application building blocks. (Linux or BSD, Aolserver, Oracle or PostgreSQL)
Specialty Match Network - Customized software for community facilities such as online matching, polls, forums, weblog, chat and email. Remote hosting services available. [.NET]
Thumper - Perl scripts provide member web space, chat rooms, discussion boards and photo galleries. Remote hosting also available. [Perl]
Web Crossing - Software bundle that includes discussion groups/bulletin boards, integrated newsgroups and mailing lists, full email services, calendar services, auctions, real-time chats and live events. Also offers hosted services. (Linux, Windows, MacOS)
