Zend Framework (ZF) is an open source, object-oriented web application framework implemented in PHP 5 and licensed under the New BSD License.
- All components are fully object-oriented PHP 5 and are E_STRICT compliant
- Use-at-will architecture with loosely coupled components and minimal interdependencies
- Extensible MVC implementation supporting layouts and PHP-based templates by default
- Support for multiple database systems and vendors, including MariaDB, MySQL, Oracle, IBM DB2, Microsoft SQL Server, PostgreSQL, SQLite, and Informix Dynamic Server
- Email composition and delivery, retrieval via mbox, Maildir, POP3 and IMAP4
- Flexible caching sub-system with support for many types of backends, such as memory or a file system.