TYPO3 is an easy-to-use, flexible, professional CMS and open source project offering services and solutions for the whole team across industries, organization sizes, and use cases.
The market share for TYPO3 decreased by 0.307 percentage points (from 0.827% to 0.52%) for all sites, more than any other segment during the same period of time.
A CMS will sometimes include a meta tag within the html of each page. This is usually a "generator" tag like <meta name="generator" content="What CMS" /> but could also be "application-name", "Powered-By" or anyting else the CMS creators decide to use.
Headers
HTTP headers can provide some of the best clues about a site's CMS. The values of set-cookie and x-powered-by headers are the most common and easiest to find.
Markup
If a CMS doesn't have meta tags, it will often have other uniquely identifiable html markup. This can range from unique html comments, ids or classes.
Versions
In addition to detecting the CMS, in some cases we are able to accurately detect which version of the CMS is being used.