What are the components in Zend Framework?

The following are components zend including:

• Zend_Acl (both Roles and Resources)
• Zend_Auth provides an API for authentication
• Zend_Cache provides a flexible approach toward caching data
• Zend_Controller and Zend_View
• Zend_Rest_Client and Zend_Rest_Server (Web Services)
• Zend_XmlRpc
• Zend_Feed, Zend_Filter and Zend_Validate
• Zend_Gdata (Zend Google Data Client): Google Data APIs provide read/write access to such services hosted at google.com as Spreadsheets, Calendar, Blogger, and CodeSearch.
• Zend_Json, Zend_Memory
• Zend_Pdf (Can create or read PDF documents on the fly, without the need to call utilities from the shell. Zend_Pdf can modify existing PDF documents.)
• Zend_Registry
• Zend_Search_Lucene