TYPO3 is unique in the quantity and quality of features that are part of its core. While there are over 6.000 extensions in the official TYPO3 Extension Repository, the following features are present without installing any community-developed extension.

6.000 Extensions and Counting

TYPO3 is an extremely modular system that can be easily enhanced with custom extensions. All TYPO3 sites are built on top of the TYPO3 core, which contains the systems' fundamental functionality. Custom extensions interact with the core through the stable, clearly documented extension API. While the TYPO3 core does change in each new release, the interfaces between extensions and the core do not, ensuring easy updates and future-proof development.

The TYPO3 Extension Manager

TYPO3 relies on the TYPO3 extension manager - included in the TYPO3 core - for installing, activating, and deactivating extensions on a given TYPO3 installation. Extensions can be quickly imported and installed with just a couple clicks in the TYPO3 Admin Interface.

Extensive Configuration Options

Nearly every aspect of the TYPO3 backend is configurable and customizable. Backend interfaces can often be configured using TSConfig. Nearly all rendered HTML content can be configured using TypoScript, a declarative configuration language used throughout TYPO3 for controlling front-end output.