FeedbackSpark's answer:
Range of powerful features designed specifically for digital product teams:
Acquainted - A simple tool to create conversational polls and surveys
Back Market - the refurbished (super) market
Decision Jam - Make better decisions quickly with your team
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.
AbTest.io - A free url shortener with A/B testing features
Google Forms - Simple web forms from Google.