Floobits - Floobits brings real-time collaborative editing to text editors, IDEs, and now Atom.
Quizzes for Pages - Quizzes for Pages is an application to create and share quizzes on your Facebook Page.
One Degree - The Human Search Engine
Outgrow - Enabling marketers boost conversion with interactive, beautiful & viral quizzes/calculators.
Keyory - Schedule periodic emails and get aggregated responses delivered right to your inbox with Keyory.
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.