gtk-gnutella is a server/client for the Gnutella peer-to-peer network.
OcenAudio
Easy, fast and powerful audio editor
Shredder
finds space waste and other broken things on your filesystem and offers to remove it.
GMusicBrowser
A customizable open-source jukebox for large collections
Video Downloader
Download videos from websites with an easy-to-use interface. Provides the following features:
Cloaker
Very simple cross-platform file encryption
ProjectM
The most advanced open-source music visualizer
Tixati
Tixati is a New and Powerful P2P System
Juk
JuK is an audio jukebox application, supporting collections of MP3, Ogg Vorbis, and FLAC audio files. It allows you to edit the “tags” of your audio files, and manage your collection and playlists. It’s main focus, in fact, is on music management.
Parlatype
Parlatype is a minimal audio player for manual speech transcription, written for the GNOME desktop environment. It plays audio sources to transcribe them in your favourite text application.