Web MIDI Chrome app for viewing messages from connected MIDI devices and sending messages to them.
You can try out the Web MIDI Console at factotumo.com/web-midi-console/.
If you'd like to develop locally, do the following.
$ git clone email@example.com:benschmaus/web-midi-console.git
$ cd web-midi-console && python -m SimpleHTTPServer 8000
You can then open http://localhost:8000 in your browser to see a locally running console. The document root of the server is the directory the server is started from. In the above example, it would be
Feedback, feature requests, etc. are welcome.