ChordU - Extracts chords from any song, integrated YouTube.
MacinCloud - MacinCloud is a Mac cloud platform that provides on-demand Mac cloud servers, flexible dev workload infrastructure and comprehensive Mac in the Cloud solutions
Chordify - Chordify turns any music or song (YouTube, Deezer, SoundCloud, MP3) into chords.
XCodeClub.com - Rent your own private Virtual Mac with latest XCode.
ChordIQ - Learn notes, chords, sight reading, perfect pitch and more.
VirtualMacOSX.com - vmOSX -- is your affordable, Mac-based home on the web.