Humbler - Find events that support causes you care about

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

Event Finda - Find events near you, and all around the world.

Eventzilla - Eventzilla lets you sell tickets online and manage attendees from one integrated application.

Rally by Eventbrite - Find the best local events and rally your friends to join

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