Visual Beat - Interactive music video
Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
stats.fm - With the click of a button you'll be logged with your Spotify account and you'll instantly gain access to a valhalla of cool stats and insights.
Event Hunt - Startups and Tech Events Curated By Locals
SoundViz - Turn music and sounds into beautiful art
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets