Zend Optimizer™ 2.5.5

[CuteBear]

http://www.zend.com/store/free_download.php?pid=13

[tuxman]

Zend Optimizer™ - Optimize your PHP code

version 2.5

Run encoded files and enhance the performance of your PHP scripts - FREE

The Zend Optimizer is a free application that runs the files encoded by the Zend Encoder and Zend SafeGuard Suite, while enhancing the running speed of PHP applications.

Benefits

Enables users to run files encoded by the Zend Encoder

Increases runtime performance up to 40%.

Info taken from web site

Just in case people don't know what this does - as i did not know