Outgrow - Enabling marketers boost conversion with interactive, beautiful & viral quizzes/calculators.

Trivia Crack - Produced by Etermax, Trivia Crack lets players answer trivia questions and compete against other people on mobile devices.

Quizzes for Pages - Quizzes for Pages is an application to create and share quizzes on your Facebook Page.

QuizUp - QuizUp gives you the opportunity to test your trivia skills against friends and strangers throughout the world.

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.

Akinator - Akinator is an entertainment app that acts like a digital genie that can read your mind. The game will ask you a few questions about the character you have chosen, and it will attempt to guess the character from your provided answers.