gmidiwatch
GTK+ GM (General MIDI) Monitor for GM GM2 XG and GS events
...A simple monitor that can be connected through QJackCtl or aconnect to monitor General MIDI Instrument names. Useful for USB MIDI keyboards that lack a display.
Also tracks channels, velocity, MSB and LSB and octave information etc.
Future suppost of .ins format files planned.
Some of the source code based on GMIDImonitor http://home.gna.org/gmidimonitor/