Quizzes for Pages - Quizzes for Pages is an application to create and share quizzes on your Facebook Page.
brandquiz - Build beautiful, fully customizable quizzes, surveys & more
Outgrow - Enabling marketers boost conversion with interactive, beautiful & viral quizzes/calculators.
Knowt - An app that uses AI to turn your notes into review quizzes.
doopoll - Create live, instant, editable polls effortlessly
DOOZY - The social space for virtual teams