Virtual Piano!

Virtual MIDI Piano Keyboard is a MIDI events generator and receiver. It doesn't produce any sound by itself, but can be used to drive a MIDI synthesizer (either hardware or software, internal or external). You can use the computer's keyboard to play MIDI notes, and also the mouse. You can use the Virtual MIDI Piano Keyboard to display the played MIDI notes from another instrument or MIDI file player. To do so, connect the other MIDI port to the input port of VMPK.VMPK has been tested in Linux, Windows and Mac OSX, but maybe you can build it also in other systems. If so, please drop a mail to the author. »

VirtualMIDISynth is a software MIDI synthesizer implemented as a Windows multimedia user driver, accessible as a standard MIDI Out device.

FreePiano is a virtual MIDI keyboard and a VST host for windows.You can use freepiano to Play piano with computer keyboard or MIDI keyboard with any vst instrument you like, or output through MIDI.Or generate any MIDI message with any key on the keyboard.You can also record your song and export a MP4 movie to share with your friends.

The Virtual Piano Online - Learn to play with this Web App!

MidiKeys is a small application for Mac OS X that presents a miniature MIDI keyboard onscreen. You can use the computer keyboard to play MIDI notes, or click on the keys with the mouse. There is also an option to select a MIDI source and see incoming notes played on the keyboard.

Learn to play the piano by playing melodies of hit songs on a virtual piano.