gRio500 is a Gnome/GTK program that lets you interface with the Rio500 MP3 player by Diamond/S3/SonicBlue. You can currently create/delete folders, add/delete songs, format memory, rename folders/songs, automatically downmix/resample MP3s during transfer, and preview MP3s (play/stop controls). You can interface with both internal and external memory (Smartmedia).
i8krellm is a GKrellM plugin to control the fans on Dell Inspiron/Latitude notebook computers. It requires the Linux kernel module and i8kutils package found at http://www.debian.org/~dz/i8k/. It displays the current CPU temperature, mode indicator, and two animated fans. Temperature triggers can be set to cycle the fans off, low, or high speed.
Gemu is a Gnome application designed to configure sound cards based on the EMU10K1 platform from Creative Labs. Gemu is capable of adding, viewing and deleting audio routes, turning on Live Drive IR, turning on the 12db boost to the front/headphone jacks on Live cards, setting the S/PDIF frequency on Audigy cards, setting the recording source, turning on digital passthrough mode, setting to the analog or digital mode of the dual-mode jack of 5.1 cards, adding and seeing patches for sources and destinations, and controlling volume on a per-route basis or by source or destination.