System Extensions

Documentation of extensions managed within the core repository directly and maintained by the core team and core contributors are called system extensions. If working with the full core package, these extensions can be found in typo3/sysext directory.

Some of these extensions provide documentation, too. These are listed here.

Documentation of system extensions in current core version

The list of extensions developed directly in the core repository changes from time to time: Some extensions are merged into others, some are integrated, others abandoned from core and maintained at a different place.

The list below is kept in sync with the current development version of the core, the table further below lists extensions that were part of the core and extracted at some point in time.

Manual	Extension key	Comment
Dashboard	dashboard
Frontend Login	felogin
Content Elements based on Fluid	fluid_styled_content
Form framework	form	Extensive manual
Indexed Search	indexed_search
Link validator	linkvalidator
Recycler	recycler
Integration of CKEditor as Rich Text Editor	rte_ckeditor	Documentation added in 2/2019, rte_ckeditor available since TYPO3 8.7 LTS
Scheduler	scheduler	Recently reworked
SEO	seo
Workspaces and Versioning	workspaces

Documentation of system extensions abandoned from current core version

Manual	Extension key	Versions	Comment
ADOdb	adodb	8.4 | 7.6	Included until TYPO3 <= 7.6
CSS Styled Content	css_styled_content	8.7 | 7.6 | 6.2	Included until TYPO3 <= 8.7
Database abstraction layer	dbal	8.4 | 7.6 | 6.2	Included until TYPO3 <= 7.6
func	func		Was removed from core in 9.0, see Changelog
Openid	openid	8.1 | 8.0 | 7.6 | 6.2	Included until TYPO3 <= 6.2
RSA authentication	rsaauth	9.5 | 8.7 | 7.6 | 6.2	Included until TYPO3 <= 9.5
htmlarea RTE	rtehtmlarea	8.7 | 7.6 | 6.2	Included until TYPO3 <= 7.6
Salted user password hashes	saltedpasswords	8.7 | 7.6 | 6.2	Merged into main core extension since TYPO3 >=7.4. See Core API
System Actions	sys_action	9.5 | 8.7 | 7.6 | 6.2	Included until TYPO3 <= 9.5
Taskcenter	taskcenter	9.5 | 8.7 | 7.6 | 6.2	Included until TYPO3 <= 9.5