GasTracker will allow you to keep track of your gas mileage and display the results in an easy to read Web site. None of the data is harvested from the Web, but is rather entered manually by the user and for the user. Currently, the program only supports the English system of miles and gallons.
Drivel is a GNOME client for working with online journals, also known as weblogs or simply blogs. It retains a simple and elegant design while providing many powerful features, including support for LiveJournal, Blogger, MovableType, Advogato, and Atom journals. (Systems based off these are also supported, including WordPress and Drupal.)
Globe*Trotter is a guestmap. It allows Web site visitors to mark where they live on a map and include their personal comments, instead of merely tacking their personal regards onto the end of a long list. It benefits your visitors because they can easily read other's comments and add their remarks in a fun and novel way. It also benefits you, the webmaster, because more people will be likely to give you feedback and you will be able to see where your visitors are. A free hosted version of Globe*Trotter (with no ads) is available.
Inserit is a content management system specially suited for designers and other non-programmers. Its main goal is to provide a codeless CMS for the most creative designers. The content is stored in a central server and distributed through Web services to your site. Designers can integrate the components through Dreamweaver.
Jonah is a two-part system for displaying headlines on your site. The backend fetches a list of My.Netscape or My.Userland style channel files, caches them locally, and generates a local html representation for each. The frontend provides an interface for viewing the generated headlines.