NTONYX MIDI Matrix (Free)
MIDI Matrix is a Device Driver for MIDI streams control. It offers 4 MIDI ports for MIDI input and a commutation matrix, capable of directing the data from the input ports to one of the output MIDI ports (or MIDI devices) installed in the computer.
After MIDI Matrix has been installed, MIDI applications start to offer four additional MIDI input ports and four ports for reception of the data from MIDI Matrix (Outputs: Midi Matrix 1, 2, 3, 4, Inputs: Midi Matrix 1, 2, 3, 4).
This means that MIDI events can be routed from several applications to a single MIDI port and played back simultaneously. Besides, it becomes possible to record MIDI data played back by several devices into a single program. MIDI Matrix can also filter out MIDI events of specified types and channels.
After installation, the MIDI Matrix icon is placed on the System Tray.
System requirements: Windows 9x/ME/NT/2000/XP/2k3.