xCSS : xCSS bases on CSS and empowers a straightforward and object-oriented workflow when developing complex style cascades.
Symfony : Symfony is a set of reusable PHP components and a PHP framework for web projects.
Phalcon PHP : Phalcon is a web framework implemented as a C extension offering high performance and lower resource consumption.
amphp : Amp is a non-blocking concurrency framework for PHP providing primitives to manage concurrency such as an event loop, promises, and asynchronous itera...
Fat-Free Framework : A powerful yet easy-to-use PHP micro-framework designed to help you build dynamic and robust Web applications - fast!
The PHP micro-framework based on Symfony2 Components