A bunch of calendars only work when connected to the internet. Others don’t sync across multiple types of devices (linux, android, apple, etc).
A lastpass of calendars, but open source.
A bunch of calendars only work when connected to the internet. Others don’t sync across multiple types of devices (linux, android, apple, etc).
A lastpass of calendars, but open source.
Tutanota calendar is okay.
It doesn’t have offline support.