mp3tools is a set of utilities (mp3id3, mp3info, mp3index, and mp3gui) for managing collections of MPEG audio files. It can get information such as bitrate and play length about a file, view and alter ID3 tags, and generate completely customized listings. All of these functions can be done either from the command line or a GUI.
Mup produces very high quality PostScript printed music or a MIDI file from a text input file. It can handle almost any kind of music, instrumental or vocal, including tablature, shaped notes, guitar grids, alternate tunings, user-defined symbols, and much more. Mup has been under active development since 1992.
NiceSTEP Java Components is a set of Java Beans and standard dialogs that give your Java application the look and feel of N*XTstep, GNUstep, and WindowMaker. It includes useful sample applications: Slide Projector, an image viewer/organizer with integrated slideshow, NiceSTEP Editor, a simple text editor with N*XT style scrollbars, NiceSTEP FTP, a graphical FTP client, and NiceSTEP CD Burner, a front end to mkisofs and cdrecord. Components include a N*XT-style scrollbar, a listbox, checkboxes, radio buttons, a 3D line, a multi-line label with a 3D border, text editing components, a directory navigator, pulldown buttons, popup lists, and more.