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.
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.
OptiMonk - OptiMonk is the most powerful Onsite Retargeting platform, that helps you increase the conversion rate of your site, and get more leads by recovering lost visitors.
doopoll - Create live, instant, editable polls effortlessly
POPUPSMART - A no-code tool to increase e-commerce sales, build email lists and engage with your visitors in just 5-minutes.