Partyfish is a content managment system with many features, including an information sharing system, commenting system, markup language, built-in BBS, and much more. It is completely themable with a bit of HTML and CSS knowledge. It also has a administration interface, which makes managing the information very easy for the administrators.
PBLang is a versatile flat file BBS, requiring only PHP 4.02 support. It has a wide range of user specific settings, various skins/layouts, configurable forums, moderators, email notifications, several levels of restrictions, membership groups, a completely configurable layout, sortable members list, avatars, etc. The emphasis is on configurability and reliability.
miniBB is a flat, linear, highly customizable BB. It features MySQL, PostgreSQL, and MSSQL support, table name definitions, color skins, language packs, HTML templates, access control, smilies, search, basic BB codes, member titles and ranks, moderators, email notification, statistics, encrypted cookie logging, IP and user ID tracking and bans, spam protection, "sticky" topics, a powerful admin panel, and more.
gtermix is a GTK+ telnet client intended for calling BBSes. It utilizes a custom VGA textmode emulating terminal widget that allows it to accurately render bulletin board systems as they were in DOS terminal programs. It currently features a GTK+ user interface, dialing directory, support for ANSI, vt100, Avatar, and TextFX terminal emulations, and proper rendering for DOS-style BBSes.