I have not looked at WebDAV closely. I was looking for something that is already supported in all the major operating systems without additional libraries. I don't believe WebDAV is commonly supported out of the box?
WebDAV is supported by Windows, MacOS and Linux. On all platforms you can mount it without admin/sudo (`net use` on Windows, `mount_webdav` on macOS and `gio mount` on Linux). Here is official Go package[1] using which you can implement your own WebDAV server (you only need to implement your FS interface).
