EarMaster - Professional software for ear training and practical music theory on Windows and Mac.
Helio Workstation - Cross-platform lightweight speed-painting tool for creating music.
Meludia - Listening exercises and to sharpen your ear and music theory skills
Sibelius - Sibelius is a virtual score creation tool which allows composers to easily create new piano scores, developed by Avid.
Perfect Ear - A simple yet advanced application for improving your solfege skills.
Guitar Pro 7 - Create, play and share your tabs