As usual I don't know where to post this topic :)
I was messing around with this software. It doesn't work 100% but it does it much better than I though. It converts the guitar analog signal into MIDI. It allows polyphony so you can play chords. The software has a couple of piano patches and a couple of synthesizers. It is very fun to hear you guitar as a piano! I didn't check it with my keyboard yet (I don't find my MIDI cable).
Unfortunately it misses some notes even playing slowly. Maybe it has to play with the latency settings. I tested it with single coils and humbuckers. Apparently it works better with the bridge pickups.
The free trial version is completely operative. It stops the conversion and asks if you want to buy it but you can play several minutes between breaks.
The videos are quite impressive!