Drupal is the more common of the two in our index: it runs on 13,296 websites against 4,475 for TYPO3 CMS, and 1 sites use both. Counts come from real scans of each site's home page, not vendor claims, and cover the sites in TechLookup's index rather than the whole web.
Drupal is a free and open-source web content management framework.
TYPO3 is a free and open-source Web content management system written in PHP.
Within the cms sites we have indexed, Drupal holds 4.3% and TYPO3 CMS 1.5%.
1 site runs both Drupal and TYPO3 CMS. That is 0% of the sites using TYPO3 CMS, the smaller of the two.
Want to know which one a particular site uses? Look it up and see its whole stack, or compare two sites side by side.