Sibelius - Sibelius is a virtual score creation tool which allows composers to easily create new piano scores, developed by Avid.
Stealthy: Secret Messenger - Chat anonymously with friends & strangers
JJazzLab - Fed up with boring backing tracks ? Try JJazzLab!
BoozyQuiz - A free drinking game for virtual parties on houseparty/zoom
Guitar Pro 7 - Create, play and share your tabs
Posiviber - Start a page, share the URL, get comments.