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