Wappalyzer - Wappalyzer is a technology profilers and leads data provider. Create lists of websites and contacts that use certain technologies.
Amio Messaging SDK - Develop for multiple messengers using JavaScript
BuiltWith - Find out the technology behind websites
Slack RTM API - Slack's Real Time Messaging API
WhatRuns - Extension that helps you identify technologies used on any website at the click of a button.
Location SMS - Location SMS is an application that allows the users to locate themselves by sending a simple text ‘Where are you?’ to the phone.