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.
CmsdAm is a simple, secure, and fast content management system framework with a core API specially designed for people with some knowledge of PHP that want to create simple dynamic sites quickly. You can modify the "template/index.php" skeleton file to include sections, plugins, and to use cmsdAm API. There is also the beginning of a simple administration interface that you can use to create your templates and sections.
BZFlag is a 3D, multiplayer, tank battle zone, capture the flag game that pits players against each other in a networked environment. It runs on Windows 95/98/NT/2000, Linux, MacOS 10.x, Irix, Solaris, and others. An OpenGL accelerator is highly recommended, but it is playable with 3D in software.
Bist stands for "bidimensional structures" and is a chemical drawing tool. It is focused on organic chemistry, but it may be useful for chemists or teachers as well. Bist support many of the formalisms used to describe molecular structures like single bond, double bond, stereospecific bond, charges, resonance arrows, lone pairs, and so on. It can export both PostScript and PNG formats.