Tabs Lite - An ad-free open source guitar tablature application using an existing popular tabs database. Built for speed and simplicity.
Guitar Dashboard - Open-source interactive music theory for guitarists.
UltimateGuitar.com - Learn how to play your favourite songs on guitar or ukulele
ChordU - Extracts chords from any song, integrated YouTube.
Fine Tuner - Fine Tuner is a minimalistic guitar tuner that utilizes your device's built-in microphone.
GtrLib - Guitar Chords - A vast and comprehensive library of guitar chords with suggested finger positions for every chord.