Glympse - Glympse is the easy way to safely share your location in realtime. No sign-up needed.
Quizzes for Pages - Quizzes for Pages is an application to create and share quizzes on your Facebook Page.
Zenly - Zenly is a GPS tracker to locate your friends in realtime.
Outgrow - Enabling marketers boost conversion with interactive, beautiful & viral quizzes/calculators.
OwnTracks - Cross-platform location sharing
doopoll - Create live, instant, editable polls effortlessly