PHP Frameworks

Zend Framework http://framework.zend.com/

Code Igniter http://codeigniter.com/

Yii http://www.yiiframework.com

CakePHP http://cakephp.org/

Symfony http://www.symfony-project.org/

Solar http://solarphp.com/

Agavi http://www.agavi.org/

PHP on Trax http://www.phpontrax.com/

Prado http://www.pradosoft.com/

Qcodo http://qcodo.com/

ezComponents http://ez.no/ezcomponents

Akelos http://www.akelos.org/

Seagull http://seagullproject.org/

Limb3 http://limb-project.com/

BlueShoes http://www.blueshoes.org/

ATK Framework http://www.atk-framework.com/

Fuse http://www.phpfuse.net/

Zikula http://zikula.org/

Buhin http://code.google.com/p/buhin/

Sierra http://code.google.com/p/sierra-php/

Maintainable http://framework.maintainable.com/mvc/1_intro.php

TinyMVC http://codeninja.de/kata_php_framework/

CodeXplorer http://code.google.com/p/codexplorer/

CoughPHP http://www.coughphp.com/

LightVC http://www.lightvc.org/

Elf http://code.google.com/p/elf-php/

SimplePHP http://code.google.com/p/simplephp/

Kata http://codeninja.de/kata_php_framework/

VCL for PHP http://www.qadram.com/vcl4php/

evoCore http://evocore.net/

Orinoco http://code.google.com/p/orinoco-framework/

Pageley http://code.google.com/p/pageley/

Stratos http://www.stratosframework.com/

PHP.MVC http://www.phpmvc.net/

Phocoa http://phocoa.com/

PHP Work http://phpwork.org/

Cesare http://code.google.com/p/cesare/

Gantry http://gantry-framework.org/