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.
Webform is the module for making forms and surveys in Drupal CMS. Results can be exported into Excel or other spreadsheet applications. Webform also provides some basic statistical review.
Yakforms is a free-as-in-free-speech software that allows you to easily create forms for your community. Whether you need a full-blown or a quick poll, Yakforms will fit your needs.
EUSurvey is supported by the European Commission to promote interoperability solutions for European public administrations. A hosted version is available free of charge to all EU citizens. Open-source, published under the EUPL licence.
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.
LimeSurvey vs SurveyMonkey opinions
It is not ready to use tool