dotCMS – What’s New in 1.5?: „WebDAV access to CMS File Repository“
PHProjekt – Summer of PHProjekt Addons: „PFolders is a WebDAV Interface for PHProjekt which enables you to access the file repository of the filemanager from PHProjekt without the web interface of PHProjekt.“
KnowledgeTree – Release Notes for Version 3.4.5: “ WebDAV and Network Pack made Open Source and added to core.“
Sounds like a pattern…