Plantoost - Plantoost is an online learning and teaching platform where educational content creators share their knowledge and make a living doing what they love.
Sibelius - Sibelius is a virtual score creation tool which allows composers to easily create new piano scores, developed by Avid.
SabiTeach - A guaranteed way to find a tutor
MuseScore.org - Create, play back and print beautiful sheet music with free and easy to use music notation software MuseScore. For Windows, Mac and Linux.
Coursera - Build skills with courses, certificates, and degrees online from world-class universities and companies
Finale - Finale, the world standard for music notation software, lets you compose, arrange, notate, and print engraver-quality sheet music.