EarMaster - Professional software for ear training and practical music theory on Windows and Mac.
Vinylify - Create your own personalized vinyl record online
GNU Solfege - GNU Solfege is free music education software.
SOUNDS DELICIOUS - A vinyl club for full-length cover albums.
Meludia - Listening exercises and to sharpen your ear and music theory skills
VinylWall - Rediscover record collecting