EventsApp - A simple concise app for creating and sharing events.
Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Event Hunt - Startups and Tech Events Curated By Locals
Mobilizon - A free and federated tool to get our events off Facebook
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.
DownToMeet - DownToMeet is a platform to organize, find, and attend group events.