Outgrow - Enabling marketers boost conversion with interactive, beautiful & viral quizzes/calculators.
Run an Empire - Turn runs into adventures
Quizzes for Pages - Quizzes for Pages is an application to create and share quizzes on your Facebook Page.
Friendship Project - Friend-finding app based on thought-provoking questions
Poll Everywhere - Audience response system that uses mobile phones, twitter, and the web. Responses are displayed in real-time on gorgeous charts in PowerPoint, Keynote, or web browser.
Fog of World - Go around the world and remember everywhere you have been in your whole life journey!