GramoFile is intended primarily for transferring gramophone records to CDs, but has many other possible uses. It can record very long .wav files with a bargraph signal peak-level meter, playback any part of the files, split long .wav files into separate tracks (with automatic track location), and process the signal with filters to reduce ticks and pops (multiple filters are provided, they can be applied in any order (multiple instances) with user-adjustable parameters). Track splitting and signal processing are done in the same run, and don't need any temporary files.
Grave is an MP3 playlist editor and interface tool for the Sensory Science RaveMP MP2000 Digital Media Player, made with the GTK+ toolkit and GNOME libraries. It allows you to create and edit playlists, which are stored as text files and can be used with most (software) MP3 players (i.e. XMMS). The part interacting with the RaveMP (hardware) MP3 player can upload and download single files or complete playlists.
Debian package information is generally stored in files having a special file format, dubbed the Debian control file format (dctrl), a special case of the record jar file format. These tools operate on any files conforming in a general sense to that format, and are therefore widely applicable whenever this format is in play. The tools in this bundle are grep-dctrl, sort-dctrl, join-dctrl, and tbl-dctrl.
Griffon is a GTK+ GUI cryptanalysis tools package for pre-digital ciphers. All monoalphabetic transposistion and substitution ciphers are covered, including multi-char ciphers such as Playfair. The toolset includes a customizable frequency count, substitution list, cribbing of ciphers, and a notepad to record your attempts.
Gnutmeg is a peer-to-peer distributed file sharing system not unlike Gnutella. It is similar to Napster, but there is no central server. Search requests are forwarded between peers. The reference implementation is in Java 1.1 and has a simple command line interface, and it uses regular expressions for searching.
Gnutran is a simple, Emacs-based front-end to a number of machine translation engines available on the Web. It can send emacs buffers to a translation engine, request a translation (e.g. English to Portuguese) and display the result on a new window. GNUTRAN interoperates with emacs-based email agents such as VM-Mail and features a highly configurable interface, allowing easy set up of new translation pairs through Emacs' customization interface.