Helium 10 - Our software contains multiple Amazon seller tools to help you find high ranking keywords, identify trends, spy on competitors, & optimize product listings.

BuiltWith - Find out the technology behind websites

ManyContacts - Create and install a Contact Form in minutes. Easily convert your website visitors into qualified leads. ManyContacts provides a FREE online contact form for conversion optimization.

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

Mobbo - Mobbo provides analytical insights to benchmark, compare and optimize mobile apps, 

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