FormCrafts - FormCrafts is an online drag-and-drop form builder for making intuitive forms.
Google Forms - Simple web forms from Google.
Typeform - Create beautiful, next-generation online forms with Typeform, the form & survey builder that makes asking questions easy & human on any device. Try it FREE!
Survey Monkey - Create and publish online surveys in minutes, and view results graphically and in real time. SurveyMonkey provides free online questionnaire and survey software.
Jotform - Free Online Form Builder & Form Creator
XLForm - XLForm is an iOS library to create dynamic table-view forms.