Tonelib JAM - Create, edit, print and listen to tablature and guitar sheet music
VArranger - vArranger is a PC arranger software, playing Yamaha, Roland and Ketron styles in realtime !
Chordsheet Maker - Create chord sheets or lead sheets quick and easily from your iPad. Add rhythms, endings, segno, codas and all what's necessary for your musicians to know what's your music about. Transcription made easy!
nimbu - nimbu is the arranger, to play characteristic accompaniments. Accompaniments that allow the title to sound and to be recognized without melody. This arranger performs the way music works. In realtime.
Aria Maestosa - Aria Maestosa is an open-source (GPL) midi tracker/editor.
JJazzLab - Fed up with boring backing tracks ? Try JJazzLab!