Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Eventzilla - Eventzilla lets you sell tickets online and manage attendees from one integrated application.
Cvent - Cvent's event management software provides event planners with a complete solution to increase event attendance and decrease event costs.
123Signup - Event & association management for membership-based business
Aventri - Aventri's event management technology has helped thousands of brands globally transform the way they plan and execute meetings and events while tracking and improving their business objectives.
Picatic - Picatic encourages event organizers to create a custom website, sell tickets and then determined their cost of use. Selling out events is easy with Picatic.