KaraFun - KaraFun is the best online karaoke. Over 35,000 karaoke songs, with studio quality, at home or on the go. Regular updates. Free demo!
Fachords - Fachords is an online site that provides many resources that you can use to take your guitar skills to the next level.
Sing! Karaoke by Smule - Karaoke with your favorite celebrity singers
TrueFire - The Best Guitar Lessons Online Fast. Easy. Fun.
Yokee - Karaoke to YouTube videos
Gitarrero Beginner - Gitarrero Beginner is a multi-featured, and easy-to-use guitar school developed as a guide to help you learn guitar skills and play them comfortably.