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.
BuiltWith Toolbar - Reveals the tech underneath a website. Browser extension.
SurveyJS - Feature rich and open source surveys for embedding into websites.
Resource Center by UserGuiding - All your product, marketing and help materials in one place
Votee - Easy, reliable, and cost effective market research
Code.xyz - The online code editor for building APIs in a single click.