Transcribe - An online app that reduces the pain of converting audio & video to text. Saves thousands of hours every month for journalists, lawyers, students and professional transcriptionists all over the world, including researchers in Antarctica.
Tabs Lite - An ad-free open source guitar tablature application using an existing popular tabs database. Built for speed and simplicity.
Tune Transcriber - Learn and transcribe music for free from your web browser (no install needed).
Guitar Dashboard - Open-source interactive music theory for guitarists.
Guitaa.com - Turn ANY song into chords, play along with interactive chords and diagram, transpose, loop, tempo control.
UltimateGuitar.com - Learn how to play your favourite songs on guitar or ukulele