Beast is a powerful music composition and modular synthesis application. It offers multiple input methods like multitrack, piano roll, and pattern editing and supports skins. On the technical side, it has a wide range of abilities like sequencing, unlimited undo/redo history, real-time synthesis with multiprocessor support, full duplex 32-bit audio rendering, precise timing down to sample granularity, on demand loading of partial wave files, on the fly decoding of various sample formats, aliasing free oscillators, and full Scheme scripting support.
rubrica is an address book written using GTK+ and GNOME. It allows you to add personal data (name, surname, address, etc.), Web links, email addresses, telephone numbers, job information (company where contact works, company infos, contact's assigment, etc.) and notes. XML is used to store the data. It can import addressbooks from GnomeCard and export to HTML.
Inkscape is a drawing tool with capabilities similar to Illustrator, Freehand, and CorelDraw that uses the W3C standard scalable vector graphics format (SVG). The supported SVG features include basic shapes, paths, text, markers, clones, alpha blending, transforms, gradients, and grouping. In addition, it supports Creative Commons meta-data, node-editing, layers, complex path operations, text-on-path, and SVG XML editing. It also imports several formats like EPS, Postscript, JPEG, PNG, BMP, and TIFF and exports PNG as well as multiple vector-based formats.
gnubiff is a mail notification program that periodically checks for mail and displays headers when new mail has arrived. It supports multiple mailboxes, pop3, apop, imap4, mh, qmail and mailfile, SSL and certificates, GNOME with integration to the panel, GTK standalone, automatic detection of mailbox format, mail header and content display, PNG animation, HIG 2.0 compliance, and spam filtering.
Sagasu is a GNOME tool to find strings in multiple files. The user specifies the search directory and the set of files to be searched. Double-clicking on a search result launches a user command that can for example load the file in an editor at the appropriate line. The search can optionally ignore CVS directories. Sagasu is a Japanese word that means "to search."
Libgda is a (relatively small) database access library. It provides a wrapper like ODBC but with more features for accessing several database engines, a general data model for use with CSV or XML files, a metadata extractor that retrieves information about database objects in a common way, and a SQL console application (like mysql, psql or sqlite3 consoles).