Virtual MIDI Piano Keyboard - Virtual MIDI Piano Keyboard is a MIDI events generator and receiver.
VCV Rack - A cross-platform modular synthesizer.
FluidSynth - FluidSynth is a real-time software synthesizer based on the SoundFont 2 specifications and has...
Pure Data - Pd (aka Pure Data) is a real-time graphical programming environment for audio, video, and graphical...
EveryonePiano - Everyone Piano is the best free computer keyboard piano software, which supports downloading 3 types of music score formats like stave, right and left hand numbered musical notation and EOP file.
miRack - Eurorack-style modular synthesizer for iOS.