QuizClash - In QuizClash, you can challenge your friends or random opponents to a game of trivia.
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.
A Google a Day - Online trivia game where you use Google's search to answer questions as fast as you can.
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.