Zoho Recruit - Zoho Recruit's applicant tracking system and recruiting software is designed for modern workforce that helps you hire more qualified candidates faster.
BuiltWith - Find out the technology behind websites
SAP SuccessFactors - SAP SuccessFactors is a complete, cloud-based human resource management (HR) system that covers everything from payroll to employee engagement.
Wappalyzer - Wappalyzer is a technology profilers and leads data provider. Create lists of websites and contacts that use certain technologies.
SmartRecruiters - Recruiting software and applicant tracking system in a complete talent acquisition suite. You are who you hire - hire better with the ATS that works.
What CMS - WhatCMS.org looks at a variety of factors within a webpage to determine what CMS a website is using.