AudioBus - With Audiobus, the revolutionary new inter-app audio routing system, you can connect your...

Duolingo - Duolingo is a free language learning app for iOS, Windows and Android devices. The app makes learning a new language fun by breaking learning into small lessons where you can earn points and move up through the levels. Read more about Duolingo.

TrueFire - The Best Guitar Lessons Online Fast. Easy. Fun.

LanguageBeast.com - Study English synonyms and antonyms to enrich your vocabulary

Go Button - Go Button is a mobile audio app designed to provide professional playback of music and sound effects for live shows. It provides a creative, self-contained show control system that runs on your iPad, iPhone, or iPod touch.

Babble - A more personalized social network