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TYPO3 is an open source PHP based web content management system released under the GNU GPL. TYPO3 is copyright © 1999-2020 by Kasper Skaarhoj.

Official Installation and Upgrade Guide

You can find instructions regarding installation and upgrade at

Server system requirements

Find the official system requirements in TYPO3's documentation.

TYPO3 Security

To ensure a secure installation, you have to make sure that you keep your TYPO3 core and the extensions up to date.

TYPO3 Contribution Guide

You can find further information in the

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