midi patchbay

Playing external MIDI devices use the mouse and computer keyboard.

TiMidity is a MIDI to WAVE converter and player.

Play all your media files, it can, play WAV, MIDI, MPG and AVI files.

Emagic SoundDiver - supports as many MIDI devices as SoundDiver.

It change the transmitting midi channel of your keyboard on the fly.

MIDITab uses a Wacom or similar tablet input device to generate MIDI data.

hypercyclic is an LFO-driven MIDI arpeggiator.

PC keyboard MIDI recording, playback and editing for Windows

A small utility for on-the-fly MIDI manipulation.

It works on in-track MIDI data instead.