- https://www.youtube.com/watch?v=-_-YPFfL8wo
- https://docs.typo3.org/m/typo3/reference-coreapi/main/en-us/ApiOverview/DependencyInjection/Index.html
- https://jweiland.net/video-anleitungen/hosting/composer-installieren.html
- https://jweiland.net/typo3/beispiele-anleitungen-faq/formulare-mailversand-konfigurieren.html
- https://youtu.be/vU_b9i_tpV4
- https://github.com/dequelabs/axe-core
- https://gitlab.com/asqatasun/Asqatasun
- https://asqatasun.org/
- https://ace.useit.se/index.php?lang=en
- https://contrast-ratio.com/
- https://www.myndex.com/SAPC/
- https://github.com/TYPO3/typo3/blob/main/typo3/sysext/core/composer.json#L94-L96
- https://deployer.org/docs/7.x/contrib/rsync