Bitrix24 started as a CRM environment but has now become a huge platform with a lot of possibilities.
Survey Monkey is the most famous and largest platform for forms, surveys and quizzes.
Wufoo is an online forms platform with which you can easily assemble web forms.
Formtools is an open source application with which you can easily build forms for your organization
It is a form builder tool that allows users to create survey forms and rate submissions at the same time.
Typeform is a platform that allows you to build forms, surveys, quizzes and surveys.