command history is a quick and dirty script created to show what commands were executed on the day command history is run. Its purpose is to help sysadmins conveniently keep a watchful eye over their users to make sure they aren't snooping around too much, and is best run from crontab to produce mail output each day.
CommPort is a community portal system based on Perl and MySQL. Each user gets a personal portal page to which they can add their own "channels" or select from a growing list of pre-prepared local, national and international content. This allows any individual to always have a page of their own personal favourites in front of them. Channels may be either "active" with continually updated weather or news headlines or "passive" with collections of links. Each user can publish channels they've created for other users to incorporate into their own Portal. Locally created channels (administrated by a web-based interface) are also available in standard RSS/RDF format for integration with any other RSS aware system (e.g. MyNetscape, MyUserland, etc.).
Cinderella is an interactive geometry software written completely in Java(R). This is important for people who want to move from "other" operating systems to Linux, but have to use geometry software in education, like teachers. Additional features are a seamless web export of constructions and the possibility to create self-checking exercises. A free demo is available for download. The demo has a 15 minutes time limit per session.