Ultimate Guitar: Tabs & Chords: Offers the world's largest catalog of chords and tabs (over 1.4 million).

TuxGuitar : A free, open-source editor that can open Guitar Pro and Power Tab files.

: Sync your own files via Wi-Fi or email, or access thousands of scores through the mySongBook portal. Official vs. Third-Party APKs

: View music scores in standard notation, tablature, or slash notation.