Attendify - Develop relationships at the events that you attend by creating smaller events with just a few people.

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.

Cvent - Cvent's event management software provides event planners with a complete solution to increase event attendance and decrease event costs.

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

EventMobi - EventMobi is an interactive mobile event app, audience response and engagement platform for conferences and trade shows.

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