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

Upcoming.org - A simple way to share and discover interesting events

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

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.

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

Colloq.io - Discover a new way to the conferences you like.