The Zend Optimizer is a detached application that runs the files encoded by the Zend Encoder while enhancing the running speed of PHP applications. For enterprise-class performance enhancement with speed-up factors approximately 10 times greater than that of the Zend Optimizer, taste the Zend Accelerator, the industry's premiere PHP accelerator. The Zend Accelerator's performance enhancement technology was specifically created to aid optimize the responsiveness and processing effeciency of robust, heavily trafficked PHP-based sites. What's New: Version 2.0.3 adds the following: Full support of Apache 2 (PHP versions 4.2.2 and above). Full support of PHP 4.3.0-pre1. * Improved installation