FluidSynth - FluidSynth is a real-time software synthesizer based on the SoundFont 2 specifications and has...
Simply Piano - Fast and fun way to learn piano
ZynAddSubFX - ZynAddSubFX is an open source software synthesizer for Linux, Mac OS X and Microsoft Windows.
Melodics - Melodics is a desktop app that teaches you to play MIDI keyboards, pad controllers, and drums.
WhySynth - WhySynth is a versatile softsynth which operates as a plugin for the
Yousician - Learn to play music at home, at your own pace