mididings (python-based MIDI router/processor/filter)

mididings is a MIDI router and processor based on Python, supporting
ALSA and JACK MIDI. It is available under the GNU GPL and currently runs
on Linux. Features:

- MIDI routing and filtering
- Modifying and converting MIDI events
- Seamless switching between patches
- MIDI event monitoring, running external commands

For API documentation, see: http://dsacre.github.io/mididings/doc/