Zend Technologies 公司是一家互联网基础架构软件公司，公司总部设在美国加利福尼亚州的库比蒂诺，技术中心设在以色列特拉维夫的拉马特甘，法国，意大利，德国均设立有办事处。公司的技术开发及商业运作都以PHPWeb应用为中心，包括Zend Studio。
Zend Technologies最为人们熟知的是它的两个奠基人：Andi Gutmans和Zeev Suraski，他们与其他以色列程序员一起，发展了由Rasmus Lerdorf开创的PHP语言。
1997年，Andi Gutmans和Zeev Suraski重写了Rasmus Lerdorf的PHP-FI，这份作品被作为PHP3发布。1998年，他们全部重新设计了语法解析器，并将它命名为Zend引擎。PHP4是第一个基于Zend引擎的产品，这一产品获得了巨大的成功。
2006年，在以色列风险投资年会，Zend Technologies获得了“最佳风险投资公司”的奖项，这一奖项由以色列总理Ehud Olmert亲自颁发。
Zend Studio
一款PHP集成开发环境软件。
Zend Engine
Zend引擎，PHP解析引擎
Zend Guard
原名Zend Encoder Unlimited，PHP文件加密软件。
Zend Optimizer
PHP代码优化工具。
Zend WinEnabler
让PHP代码在Windows下运行得更稳定。
Zend Core
主要支持IBM和Oracle数据库，取代传统的PHP安装方式，用半图形的界面进行安装。
Zend framework
PHP开发框架。
Zend Server
整合安装WEB服务器的商业软件，Zend Server CE是其免费版本。
Zend Accelerator
PHP代码优化加速软件，已停止使用
Zend Guard
加密前
<?php
phpinfo();
?>
加密后
<?php @Zend;
4147;
/* ?This is not a text file!揄 */
print <<<EOM
<html><body><a href="http://www.zend.com/store/products/zend-safeguard-suite.php"><img border="0" src="http://www.zend.com/images/store/safeguard_optimizer_img.gif" align="right"></a><center><h1>Zend Optimizer not installed</h1></center><p>This file was encoded by the <a href="http://www.zend.com/products/zend_guard">Zend Guard</a>. In order to run it, please install the <a href="http://www.zend.com/products/zend_optimizer">Zend Optimizer</a> (available without charge), version 3.0.0 or later. </p><h2>Seeing this message instead of the website you expected?</h2>This means that this webserver is not configured correctly. In order to view this website properly, please contact the website's system administrator/webmaster with the following message:<br><br><tt>The component "Zend Optimizer" is not installed on the Web Server and therefore cannot service encoded files. Please download and install the Zend Optimizer (available without charge) on the Web Server.</tt><br><br><b>Note</b>: Zend Technologies cannot resolve issues related to this message appearing on websites not belonging to <a href="http://www.zend.com">Zend Technologies</a>. <h2>What is the Zend Optimizer?</h2><p>The Zend Optimizer is one of the most popular PHP plugins for performance-improvement, and has been available without charge, since the early days of PHP 4. It improves performance by scanning PHP's intermediate code and passing it through multiple Optimization Passes to replace inefficient code patterns with more efficient code blocks. The replaced code blocks perform exactly the same operations as the original code, only faster. </p><p>In addition to improving performance, the Zend Optimizer also enables PHP to transparently load files encoded by the Zend Guard. </p><p>The Zend Optimizer is a free product available for download from <a href="http://www.zend.com">Zend Technologies</a>. Zend Technologies also developed the PHP scripting engine, known as the <a href="http://www.zend.com/products/zend_engine">Zend Engine</a>.</p></body></html>
EOM;
exit();
__halt_compiler();
?>
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