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

OptinMonster - OptinMonster helps to convert abandoning website visitors into subscribers and customers.

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

Sleeknote - Set up lead capture forms on your website in minutes. No coding required. Sync your new email leads with your favorite email service provider. Try for free.

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.

Poptin - Create engaging and high converting website pop ups and contact forms in minutes. With Poptin, you get access to a feature-packed conversion rate optimization toolkit that converts more website visitors into email subscribers, leads, and customers.