Impraise - Impraise is a web and mobile app for 360 degree feedback and peer coaching
BuiltWith - Find out the technology behind websites
Peakon - Take the guesswork out of managing a great team. Peakon is the simple, scientific, and strategic way to maximise your employee engagement, retention, and culture.
Wappalyzer - Wappalyzer is a technology profilers and leads data provider. Create lists of websites and contacts that use certain technologies.
SelfStir - SelfStir offers 360-degree feedback system.
What CMS - WhatCMS.org looks at a variety of factors within a webpage to determine what CMS a website is using.