Fachords - Fachords is an online site that provides many resources that you can use to take your guitar skills to the next level.
Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
TrueFire - The Best Guitar Lessons Online Fast. Easy. Fun.
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
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.
Plivo - Plivo simplifies your customer engagement.