Open-source enterprise CMS whose commercial arm, TYPO3 GmbH, is legally registered in Düsseldorf, Germany.

TYPO3 is a long-established open-source enterprise content management system. Its commercial services — enterprise support plans, SLAs, and partnerships — are run by TYPO3 GmbH, a wholly-owned subsidiary of the non-profit TYPO3 Association, which holds the trademark. TYPO3 GmbH’s registered office is in Düsseldorf, Germany.

The CMS is self-hosted and widely used by government agencies, universities, and enterprises across Europe for large, multi-site, multi-language installations, positioning it as a self-managed alternative to hosted US website builders.