eZ Systems, an open source enterprise content management (ECM) company, announced the release of two new tools in the eZ Components suite: Tree and Webdav. eZ Components is an enterprise-ready general-purpose PHP components library that can be used independently or together for PHP application development. The eZ Components tool set provides a suite of building blocks designed to enhance functionality while reducing development risk. The Tree component enables you to create, manipulate, and query tree structures. The Webdav component enables users to upload and download content by dragging and dropping files and folders to and from the desktop. The Webdav component is a stand-alone implementation that does not have any external dependencies.