- NoteWorthy Composer
- A music notation software authoring tool for Windows.
- A Python Toolkit for Computer-Aided Musicology and Musical Analysis.
- Create, play and print beautiful sheet music.
- The standard open format for exchanging digital sheet music.
- LilyPond is a music engraving program, devoted to producing the highest-quality sheet music possible.
- The Musical Intervals Tutor
- A study aid to help you learn the sounds of the basic music intervals from minor second to perfect octave.
- Big Ears
- The Original Online Ear Trainer!
- Dolmetsch Online
- Music theory & history online.