LoyaltyLion - LoyaltyLion is a data-driven loyalty and engagement platform trusted by thousands of ecommerce brands worldwide.
BuiltWith - Find out the technology behind websites
White Label Loyalty - White Label Loyalty is an enterprise loyalty platform that offers simple solutions for complex needs to businesses struggling with customer loyalty, retention and engagement.
Wappalyzer - Wappalyzer is a technology profilers and leads data provider. Create lists of websites and contacts that use certain technologies.
Open Loyalty - 100% customizable loyalty platform with ready to-use-features gamification and loyalty features. Available in Open Source and Enterprise edition.
What CMS - WhatCMS.org looks at a variety of factors within a webpage to determine what CMS a website is using.