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

FreeBu - Smart free/busy calendar sharing and meeting organizer.

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

Letsfind - Letsfind is a fast, easy-to-use, ad-free way to create online (meeting) polls.

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

FullCalendar - FullCalendar is an open-source JavaScript event calendar.