LimeSurvey
If you do not have the special programming knowledge, but you are willing to create an online surveys and questionnaires, then you have the best option to proceed. LimeSurvey is an open source application distributed under the general public license version 2. This application is written in PHP and worked with MySQL, PostgreSQL, and MS-SQL databases.
According to their official website, the latest and old versions of this application is freely available on Sourceforge so if you want to choose any specific version, you can download it from the mentioned site. However, it is recommended that if you are using older versions of this application, you should upgrade it to the latest version.