WebDAV/CardDAV/CalDAV

Hello everyone,

I’m looking for some shard for WebDAV/CardDAV/CalDAV.
I’ve been looking at the usual shard search engines, but I couldn’t find any.
It wouldn’t be the first time that some shards exist and I’m just doing a bad job finding them.
And as WebDAV might be also common enough for a shard to exist, I’m wondering if you know of any, or if someone is already working on one (and just hasn’t published anything yet).

Thanks