Sibelius - Sibelius is a virtual score creation tool which allows composers to easily create new piano scores, developed by Avid.

LiveTrax - LiveTrax is an app by MasterMedia Productions through which musicians can control the playback of their favorite track during live performances by using simple controls.

MuseScore.org - Create, play back and print beautiful sheet music with free and easy to use music notation software MuseScore. For Windows, Mac and Linux.

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.

Finale - Finale, the world standard for music notation software, lets you compose, arrange, notate, and print engraver-quality sheet music.

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