A few posts have addressed transcription.
Here is a tool I had to pay 99 bucks for but I didn't mind because when I sit down and play the guitar and come up with some cool licks or even a full classical piece it makes a midi copy note for note. I exchanged a lot of emails with the developer when it was in Beta and he is a really cool guy. Great product.
https://www.jamorigin.com/midi-guitar-and-midi-bass-official-release/AND, obviously once you record a guitar lick you can play it back in real-time or later as another instrument.
In other words, if I am channeling the output to Aria, I can use the electric guitar to play violin--or anything else.
OR, just for lazy people like me, I can load in a solo audio track of some part (say a lead I played in another song) and it will transcribe those notes as midi.
Sometimes it is a little off, and I have to tweak a few things in Guitar Pro but it is pretty daggone close. And polyphonic. Trippy.
I like to have this turned on when I come up with a riff and go ahead and make a Guitar Pro Copy of it (or simple midi) so if I come back a year later and ask "What the heck was I doing?" this will tell me what the heck I was doing.

For chords I got riffstation a while back and it is a little pricey I guess at 40 bucks (and BIAB can also analyze chords) but it is pretty handy for practicing if you are in a rush and want to figure out what someone is doing on a tune.
https://pro.riffstation.com/buy-or-download/