You can mount WebDAV Folders with the Linux tool fusedav using the user space mount architecture “fuse”:

fusedav https://my.server/my_folder /my/mountpoint

The suprise to me with version 0.2 (part of Debian Lenny) was that

1. fusedav will stay in foreground
2. fusedav will not ask for credentials at startup, but when the mounted filesystem is accessed the first time (e.g. ls /my/mountpoint in another shell.)

Both is uncommon for fuse modules.