Google Contacts - Google Contacts is Google's contact management tool that is available in its free email service Gmail, as a standalone service, and as a part of Google's business-oriented suite of web apps Google Apps.

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.

FullContact Card Reader - Automagically scan biz cards into LinkedIn/Gmail contacts

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!

Nextcloud Contacts - The Nextcloud contacts app is a user interface for Nextcloud's CardDAV server.

Google Forms - Simple web forms from Google.