When looking at tablature for guitar how do you figure out what chords to use?

1. How do I identify chords in tabs?
2. Is there an app that tells you what guitar chord your playing?

How do I identify chords in tabs?

Read tabs from left to right, just like you would read a book. Once you've gotten to the end of the “line,” you'll move to the next line, starting again left to right. Single notes will be represented by one number on one string. If you see stacked numbers, you'll play them at the same time—it's a chord.

Is there an app that tells you what guitar chord your playing?

Uberchord's chord-recognition ability suggests it might be able to tell you the chords to your favorite solo acoustic track.