I’m experimenting with raidcale. I’m trying to find some client apps for Linux and Android.
So far, I have:
Desktop
- Calendars: GNOME Calendar
- Contacts: GNOME Contacts
- Tasks: Errands
- Journals: Unknown
Android:
- Calendars: Probably just default Calendar app
- Contacts: Not sure yet
- Tasks: Tasks.org or jtx board
- Journals: jtx board
Apps working with VTODO seem to be common enough, but does anyone know desktop apps that work with VJOURNAL?


radicale can do cantacts as well btw. so that you can use the stock android contacts app. At least with DAVx5 on android.
That’s exactly what I use, works like a charm.