Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.

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.

Event Hunt - Startups and Tech Events Curated By Locals

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.

Eventbrite - Discover Great Events or Create Your Own & Sell Tickets

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