Survey tool to ask questions on individual pages – what are they called?

Is there an off-the-shelf survey tool that can ask simple questions on specific pages? Along the lines of the "Was this information helpful?" on Microsoft's support pages (example). The user gets asked a simple question and if they click "yes", "no" (or whatever - needs to be configurable) then they get a pop-up where they can expand upon their answer.

I realise tool recommendations are off-topic for Stack Exchange sites, so what are these on-page survey widgets generally called? I'd like to research the options and see what advice there is out there for making the most of them.