Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
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.
ioBroker - flexible and modular application for the IoT and Smarthome
Typeform - Create beautiful, next-generation online forms with Typeform, the form & survey builder that makes asking questions easy & human on any device. Try it FREE!
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation
Google Forms - Simple web forms from Google.