Supported Operating Systems:

• Linux x86, x86-64
• Windows x86 XP/2003/Vista 32bit (Zend Core required)
  
• Solaris Sparc 8, 9, 10
• Solaris x86 9,10
• i5/OS V5R3 or V5R4 (For more details refer to Zend Platform for i5/OS System Requirements.)

Supported Web Servers:

• Apache 1.3.x
• Apache 2.0.x (compiled in prefork mode only!)
• Apache 2.2.x (compiled in prefork mode only!)
• Zeus Web Server 4
• Microsoft IIS 5, 6 and 7(Vista only)

Supported Browsers:

• Microsoft Internet Explorer 6 and above
• Mozilla Firefox 1.5 and above

PHP Compatibility:

• 4.4.x, 5.0.x, 5.1.x, 5.2.x

Java Bridge Compatibility:

• JRE 1.4 or later
  

Note: Zend Platform does not support CGI and CLI configurations.