Forum OpenACS Q&A: Re: Copenhagen - UI discussion - Mozilla editing of content
This is an attempt to offer a standard interface to a site content and hierarchy. It uses webdav to access a site's content.
The ns_dav project was started to offer WebDAV access to AOLserver. http://www.museatech.net/nsdav
It is just a start. A goal would be an ns_dav interface to the content repository, so that the CR files could be accessed from a WebDAV filesystem.
More on WebDAV: http://www.webdav.org
This work definitely overlaps with CMS.