English tutorials
- https://nextcloud.com/blog/nextcloud-offers-caldav-synchronizer-for-outlook-users/
- https://help.one.com/hc/en-us/articles/115005586889-Setting-up-Outlook-2016-with-CalDAV-Synchronizer
- https://www.webdavsystem.com/server/access/caldav/ms_outlook_caldav_synchronizer/
- https://support.icewarp.com/hc/en-us/articles/360013984298-How-to-set-up-CalDav-Synchronizer-in-Microsoft-Outlook
German tutorials
- https://hitco.at/blog/windows-outlook-google-kalender-android-outlook-app-caldav-2-wege-synchronisierung/
- https://www.dzwebdesign.de/owncloud/owncloud-kalender-mit-outlook/
- https://medialekt.de/de/dokumentation/owncloud/anbindung-der-owncloud-an-outlook-2016
- https://www.cms.hu-berlin.de/de/dl/kalender/sogo/caldavsync
- https://decatec.de/home-server/owncloud-unter-windows-10-optimal-nutzen/
- https://www.rz.uni-osnabrueck.de/Dienste/Sogo/Kalender/outlook-2010.htm
- https://www.luis.uni-hannover.de/4804.html
- https://posteo.de/hilfe/posteo-kontakte-mit-outlook-synchronisieren
- https://help.one.com/hc/de/articles/115005586889-Einrichten-von-Outlook-2016-mit-dem-CalDav-Synchronizer
- https://all-inkl.com/wichtig/anleitungen/programme/e-mail/caldav-kalenderfunktion/outlook-2019_468.html
- https://www.youtube.com/watch?v=FUz_AxDhk04