Sibelius - Sibelius is a virtual score creation tool which allows composers to easily create new piano scores, developed by Avid.
Audioalter - Your online audio toolkit. A collection of easy-to-use web tools for all your audio files
JJazzLab - Fed up with boring backing tracks ? Try JJazzLab!
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.
Guitar Pro 7 - Create, play and share your tabs
Tune Transcriber - Learn and transcribe music for free from your web browser (no install needed).