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!

BuiltWith - Find out the technology behind websites

Jotform - Free Online Form Builder & Form Creator

Wappalyzer - Wappalyzer is a technology profilers and leads data provider. Create lists of websites and contacts that use certain technologies.

Tally.so - The simplest way to create forms, for free.

WhatRuns - Extension that helps you identify technologies used on any website at the click of a button.