Zend Optimizer for Windows

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Editors’ Review

Download.com staffFebruary 26, 2026

Zend Optimizer is a free tool that accelerates PHP applications by running encoded files. It optimizes code execution for better performance.

Top Recommended Alternative

TigerII WAP Tools

Trial version

Pros
- Enhances running speed of PHP applications
- Runs files encoded by Zend Encoder
- Free application
Cons
- Not the highest performance option available
- No details on specific optimization techniques

Zend Optimizer for Windows

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Full Specifications

GENERAL

Release: August 29, 2007

Latest update: February 26, 2026

Version: 3.3.0

OPERATING SYSTEMS

Platform: Windows

Operating System

Windows 10
Windows 2000
Windows NT
Windows XP

Additional Requirements

Supported PHP versions: 4.0.5 and above (4.0.4 in previous versions of the Zend Optimizer)
Supported operating systems: Linux glibc 2.1 / 2.2 (e.g. RedHat 6.x/7.x, Debian 2.2, SuSE 6.4 / 7.2, Mandrake 8.1, and others), Sparc Solaris 2.x, FreeBSD 3.4 / 4.0,
Windows(r) NT 4.0 / 2000 / XP, Mac OSX
Solaris i386, & OpenBSD are supported by the Zend Optimizer 1.2.0.
Supported Web Servers: Apache 1.3.x, IIS 4 and 5, Zeus (using FastCGI), CGI
See our Compatibility Table to review compatibility issues with other products.

POPULARITY

Total Downloads: 7,694

Downloads Last Week: 2

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Developer’s Description

By Zend Technologies

optimize your PHP code

The Zend Optimizer is a free 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, try the Zend Accelerator, the industry's premiere PHP accelerator. The Zend Accelerator's performance enhancement technology was specifically created to help optimize the responsiveness and processing effeciency of robust, heavily trafficked PHP-based sites.