An advanced drum machine with pattern-based programming
Polyphonic synthesizer LV2 plugin
audio sequencer
tools for Wersi Datencassette, RS232 packets, and image file formats
drumucass: tools for the E-mu Drumulator data cassette format
DIY MIDI Drum Trigger
Free yourself
Text-based chiptune creator
A complete Arduino library for the Fluxamasynth shield.
MIDI multi track song writing in an ASCII editor!