KLAVAR! is porting to MS Windows a graphic music sequencer/notation program based on the easy-to-read KLAVAR music notation, without clefs, sharps, flats or accidentals. It was originally written in GFA Basic for the Atari ST. Earlier releases were also targeting Apple Mac OS X and GNU/Linux operating system but the effort had to abandoned due to the uncertain future of the development tools used.
worthy to try...!