Evas is a canvas library, designed to work with the X Window System. It is designed to be able to take advantage of any graphics hardware or CPU processing power you may have, or to adjust for the lack of it. It has a simplistic API to access the features of a canvas to aid in making development using Evas easy.
eXtace is a visual sound display/analysis program. It requires Esound (esd) for its audio source. It includes various fast fourier transforms of the audio data in realtime. Its displays include a 3D wireframe flying landscape, a 3D textured flying landscape, a 16-256 channel graphic EQ, three types of scopes, a 3D "spike" flying landscape, and two forms of spectragrams. The 3D traces can be picked up, manipulated, and displayed at nearly any angle. eXtace also features a 3D direction control widget for controlling the angle and speed at which the trace runs away and a gradient/colormap editor for changing the colormap to suit your needs. No OpenGL is required.
mp3riot (formerly known as f2html.pl) is a command line utility that searches recursively through directories, builds a file list (with additional file information), and generates HTML files, playlists, etc. The output can be controlled, links can be corrected, and more. The script is mainly desigend to create Web pages, playlists, and databases for MP3 and Ogg files, but can also used for other purposes.