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.)
EasyMoblog is a platform for the publishing of personal blogs. It features the ability to update it via email, a Web-based installation wizard, layout personalization, language localization, additional plug-in support, support for HTML formatted messages, RSS syndication, and much more.
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.
RSSOwl is a wise SWT-based news aggregator. Its search feature lets you hunt down the best RSS/RDF/Atom feeds on the Web, and then organize and share your feeds with agility. Other features include an integrated browser; AmphetaRate, for acquiring news tailored to your tastes; full-text searching through headlines and descriptions; export feed summaries to PDF, RTF, and HTML; the ability to import or export OPML; the ability to exchange collections with others by importing or exporting subscriptions; the ability to import or export user data to and from other machines; automatic newsfeed upating; and much more.