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...