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.
Helium 10 - Our software contains multiple Amazon seller tools to help you find high ranking keywords, identify trends, spy on competitors, & optimize product listings.
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!
Samar Pro Amazon Revenue Calculator - Amazon FBA calculator's fast and easy version by Samar Hanif. Watch the video to know how this calculator makes your business calculations much easier and faster
Google Forms - Simple web forms from Google.
Jungle Scout - Amazon product research made easy.