Boolean - Send single question yes/no surveys
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!
Wizu - Wizu is a conversational User Interface that can measure, and help companies improve, customer experience
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.
Hubert.ai - Hubert+1 - Add more to your team
Google Forms - Simple web forms from Google.