During your quantitative research method what kind of web-site or platform did/do you use for questionnaire (survey)? Which is FREE and user-friendly for further statictical processing in SPSS software?
I used Google Forms before - finding it is free & can support many questions (> 200 questions in a single questionnaire) and can collect > 200 responses from respondents. All the responses are deposited into a spreadsheet that can be converted into Excel, CSV or SPSS file. SPSS can be used to analyze those data collected.
I have used Google Forms (6-8 times) and Webropol, however, found Google Forms much more easier to create forms and disseminate. Webropol on other hand requires some time to get familiarize with.
Detail regarding backend (output) has been mentioned by Han above.
However, when you are using Google Forms, bear in mind your local privacy laws whether or not it allows to store personal information of the respondents outside your country or region or for example in US. EU privacy laws prohibits to store personal information of EU citizens outside EU. I don't know how it works for UK after the Brxit. Google is based in US.
I personally have not used Qualitrics but I have seen studies published in CHI and SOUPS (two well known conferences in human computer interaction) in which n which Qualitrics was used.