MIDI-Thru - MIDI Port Routing Tool
MIDI-Thru is a tool for musicians. Helpful for wiring the outboard gear trough the computer. It provides functionality to attach physical MIDI In/Outputs in software. Unlimited number of connections can be created and activated as desired. Several outboard or software emulation devices can therefore be hooked up to a single control interface.
Connections remain active as long as the program is running. It can be specified whether the program should store/overwrite session data on exit, the saved session will be automatically loaded at the next startup and active connections restored. Take a look at a Screenshot.
The ZIP archive contains the actual program, just unzip it wherever you want. Connection settings are stored in the registry and can be removed quickly by running mthru executable with /clearreg parameter specified.
Downloads
Windows application: mthru.zip.
This program is freeware and may be used for any purpose. No warranty whatsoever.
If you're interested then grab the C source code which is thereby public domain:
mthru-src.zip, that is you're free to do with it whatever you want.