Hop - Spike makes working easier and more efficient. Saving you and your team time, sanity, and a lot of headaches.

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

Funnster - The best way to get together with your friends and family

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

Gigstarter - Gigstarter uses crowd funding to take the pain from arranging events.

Calendify - Calendify is an event community where you can share, publish, and subscribe to event calendars. It helps you to stay informed about what you are interested in and what is yet to come.