BuiltWith - Find out the technology behind websites

Unlimited Criminal Checks - Unlimited Criminal Checks is a criminal records database that provides you with instant access to unlimited criminal check reports.

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

Jailbase.com - Jailbase.com is a database to get information about arrested persons, country mugshots, and jail inmates that can be used to curb crime and make communities a safer place to live in.

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

CheckPeople - CheckPeople is an all in one people searching software that provides you with information about email addresses, phone numbers, social media data, and contact information, and much more.