Blursoft MetaForum utilizes AJAX to generate a unique forum experience. Threads and posts auto-update in real time, with no refreshing required. User-based moderation ensures only the most interesting topics emerge above your viewing threshold, and private threads invite multiple users to engage in a private conversation. Complete with advanced quoting mechanisms, CSS based templates, and statistically normalized user rankings, MetaForum is a fresh, fast, efficient, and completely new perspective on forums and message boards.
Pocoo is a bulletin board software (a.k.a. message board). It provides an advanced plugin system with a component architecture which allows other developers to modify Pocoo to their liking without the need to touch existing source code. Because it uses SQLAlchemy, it is possible to use either MySQL, SQLite, Oracle, or Postgres as the storage backend.
Devalot is a social networking application centered around software projects. It connects the user community with the development community and encourages participation and communication. It includes all the features you've come to expect in modern Web-based applications such as tagging, comments, and a wiki, as well as features you'd expect in project tracking software such as ticketing. It has features similar to some of those found in Trac, Collaboa, GForge, Mephisto, and Typo.