XCalSync - Automatically copy events between your calendars.

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

Social - Social let’s you plan almost anything with your connections and keeps track of it for you.

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

Evounce - Easy and fast event planning platform

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