Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Content Square - Qualitative, quantitative and live testing to improve the user experience.
Cvent - Cvent's event management software provides event planners with a complete solution to increase event attendance and decrease event costs.
Mode - A complete analytical toolkit, free forever
Socio - Connecting with people is just a "phone shake" away!
Kompyte - Track & analyze competitors in real time.