What CMS - Website CMS Detector Tool

What CMS is an online tool to detect what CMS any website is using. You can just use the URL of any website to detect its CMS. They have detection methods for 595 different content management systems and regularly update their algorithms.

Although it is not 100% accurate, but their detection service is as good as they come and they are always making improvements. They also provide an API for websites and bulk deductions. Free API plan is also available with limited 1000 detections per month.