Quizzes for Pages - Quizzes for Pages is an application to create and share quizzes on your Facebook Page.
CKEditor - Real-time collaborative future-ready rich text editor
Outgrow - Enabling marketers boost conversion with interactive, beautiful & viral quizzes/calculators.
Summernote - Summernote is a JavaScript library that helps users create WYSIWYG editors online.
doopoll - Create live, instant, editable polls effortlessly
Froala Editor - Froala Editor is a WYSIWYG HTML editor that enables rich text editing capabilities for the applications.