Phalcon!

PHP (version 4 or 5) framework with a thin model layer. Includes an ActiveRecord class for database agnostic (mostly) data retrieval. Good community support in its forums.

Symfony is a set of reusable PHP components and a PHP framework for web projects.

Extending the art & spirit of PHP, Zend Framework is based on simplicity, object-oriented best practices, corporate friendly licensing, and a rigorously tested agile codebase. Zend Framework is focused on building more secure, reliable, and modern Web 2.0 applications & web services, and consuming widely available APIs from leading vendors like Google, Amazon, Yahoo!, Flickr, as well as API providers and cataloguers like StrikeIron and ProgrammableWeb.

Yii is a high-performance component-based PHP framework best for Web 2.0 development.Yii comes with rich features: MVC, DAO/ActiveRecord, I18N/L10N, caching, authentication and role-based access control, scaffolding, testing, etc. It can reduce your development time significantly.

Silex - The PHP micro-framework based on Symfony2 Components

Nette Framework is a popular tool for PHP web development. It is designed to be the most usable as possible and is definitely one of the safest one. It speaks your language and helps you to easily build better websites.

PHPixie started as a micro framework and has gradually grown to be one of the most popular fullstack PHP frameworks while retaining its high performance. This is in part because of the strict architecture that avoids common pitfalls such as reliance on static methods, global scope, singletons and other antipatterns, thus also ensuring that the code is easy to read, debug, extend and test. In fact all PHPixie components boast full unit test coverage. It is the PHP framework that will never stand in your way and provides you with full control over execution flow, easy to learn and straightforward to master. »

Mako is a lightweight and easy to use PHP framework.It has native library as : Authentication, ACL, DateTime, ORM query builder, Template personal, Cache, Validation and more...

Spark provides the perfect starting point for your next big idea. Forget all the boilerplate and focus on what matters: your application.