Sibelius - Sibelius is a virtual score creation tool which allows composers to easily create new piano scores, developed by Avid.
Spotify - Map shows when two people play same song at same time
Guitar Pro 7 - Create, play and share your tabs
Last.fm - The world's largest online music service. Listen online, find out more about your favourite artists, and get music recommendations, only at Last.fm
Synfire - The comprehensive Music Prototyping Studio for professionals and enthusiasts.
SoundCloud - Enjoy music & follow favourite artists