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.
Helium - Helium lets you accept payments by credit card for anything you want to sell online.
Google Forms - Simple web forms from Google.
PiP for Mac - Always on top window preview similar to the popular windows only OnTopReplica
Qualtrics - Qualtrics is the most trusted research platform, helping brands make crucial business decisions. From surveys to insights to action.
PiPifier - PiPifier is a macOS 10.