MARE Surveys is described as 'Your website visitors aren't just numbers on a chart. They're real people, with real opinions and insights about your website, the market and your business' and is a Survey Creator in the Online Services category. There are more than 50 alternatives to MARE Surveys, not only websites but also apps for a variety of platforms, including SaaS, Self-Hosted solutions, Android and iPhone. The best alternative is LimeSurvey, which is both free and Open Source. Other great sites and apps similar to MARE Surveys are Nextcloud Forms (Freemium, Open Source), UseResponse (Paid), SurveyMonkey (Freemium) and SurveyJS (Free Personal, Open Source).
LimeSurvey (formerly PHPSurveyor) is an Open Source PHP web application to develop, publish and collect responses to online & offline surveys. Anonymous and Not-Anonymous survey, open and closed group of participant surveys, optional public registration for surveys.
Unlike the most others solutions, SurveyJS Project consists of three fully independent parts: run-time SurveyJS library, SurveyJS editor and SurveyJS service for storing and analyzing results. You may stick with the complete solution or use only a library.