Hop - Spike makes working easier and more efficient. Saving you and your team time, sanity, and a lot of headaches.
Facebook Local - Discover places to go and events happening near you
Funnster - The best way to get together with your friends and family
TechEvents.co - Tech and startup events aggregator
Gigstarter - Gigstarter uses crowd funding to take the pain from arranging events.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets