LilyPond sheet music text editor
GUI to work with abc notation
netabc creates and renders html files with abc music notation
graphical front-end for editing/transposing abc music files
fl_toadflax is a viewer/editor for abc music notation files
Extend abcm2ps to support direct generation of PNG, SVG and PDF files
Simple visual and acoustic metronome with bar-based song part tracking
Open-Source Braille Music Notation Software