Sibelius - Sibelius is a virtual score creation tool which allows composers to easily create new piano scores, developed by Avid.
MusicTrans - MusicTrans is a powerful learning tool for playing any song.
JJazzLab - Fed up with boring backing tracks ? Try JJazzLab!
Audioalter - Your online audio toolkit. A collection of easy-to-use web tools for all your audio files
Guitar Pro 7 - Create, play and share your tabs
Transcribe - An online app that reduces the pain of converting audio & video to text. Saves thousands of hours every month for journalists, lawyers, students and professional transcriptionists all over the world, including researchers in Antarctica.