The Laminas Project is an open-source continuation of Zend Framework, a PHP framework and component library targeting enterprise applications.

Yii is a fast, secure, and efficient PHP framework.Flexible yet pragmatic.Works right out of the box.Has reasonable defaults.

Phalcon is a full-stack PHP framework whose source code is written in the C programming language. Using the framework doesn’t require knowledge of C as it uses PHP classes and its namespaces.

CakePHP has a broad set of libraries that include one of the most thorough arrays of helpful components. It’s a great option if you need to implement hard-to-find features.

Laravel is a web application framework with expressive, elegant syntax. We’ve already laid the foundation — freeing you to create without sweating the small things.

The Fuel PHP Framework is a fast, simple and flexible PHP 5.4 framework, born from the best ideas of other frameworks, with a fresh start!

Fat-Free Framework, or F3, is a straightforward PHP framework. Its codebase is only 65 KB, and the framework is modular, allowing you to only use the necessary code.

Slim is a PHP micro framework that helps you quickly write simple yet powerful web applications and APIs.

PHPixie is easy to learn and does not rely on automagic. You will always be in charge of what's happening.

Symfony is a set of PHP Components, a Web Application framework, a Philosophy, and a Community — all working together in harmony.