Quizzes for Pages - Quizzes for Pages is an application to create and share quizzes on your Facebook Page.
Leadfeeder - Leadfeeder converts your website visitors into sales. Connect your website's Google Analytics to Leadfeeder and unlock the power of seeing who`s visiting your site!
Outgrow - Enabling marketers boost conversion with interactive, beautiful & viral quizzes/calculators.
Lead Forensics - B2B website analytics and lead generation.
doopoll - Create live, instant, editable polls effortlessly
Clearbit - Clearbit provides Business Intelligence APIs