I'm looking for some online calendar software, which uses CalDAV.

I currently use TheGood.Cloud (a public NextCloud instance), but it's unencrypted and a tad slow where I am. I also used to use fruux.

For to-do lists, I currently use Todo.txt, but I am moving to Vikunja.

Is there anything out there?

I'd also like to make it clear that I AM IN NO POSITION TO SELF-HOST. At least, I won't be for a long time.

Thanks!