[mping]

Checkout songsterr: http://songsterr.com there's others similar, but I prefer this one. Bonus points, if you open the web inspector and view a song, you can get the http request that downloads the .gp4/5 file and download the file for yourself.

And no, I'm not ashamed to do this; I was one of the lots of guys that submitted gp3 in early 2000's by manually transcribing them; later these community-generated tabs were takend down (DMCA I guess) but I was dumbfounded when I learned that some companies were selling access to the tabs.