A personal file system indexing and search application. Part of the Gnome desktop. Indexes file contents, metadata, and location to better help you find things. Also allows you to do your own tagging of stuff it keeps track of. Uses D-BUS for IPC and SPARQL for search. Uses multiple ontologies for different kinds of files (including multimedia content).
How to debug removable devices under Linux with the Gnome desktop.
A command that can be used on a Linux machine if you're running Gnome to delete the oldest image and movie thumbnails in your desktop's cache to reclaim disk space. I run this command once a month as a cronjob.
An informative thread in the Ubuntu Forums about disabling the Recently Used and Recent Documents menus of the Gnome desktop for privacy.
An open source GUI app for Linux which helps you clean out old tempfiles and logs that are taking up disk space. The fact that this also makes for good personal information hygine is parenthetical. Can clean out files for Firefox, bash, Beagle, Flash, and more.
A fork of the last GNOME v2.x release, before GNOME 3 went and screwed everything up. It's being maintained and updated, and suggested as a usable replacement for the bloated, lovecraftian beast that GNOME 3 was out of the gate.