Yaf is described as 'The first PHP MVC framework which is written in C and built as PHP extension. It is considered the fastest and the lowest resource consuming PHP framework for now. It is well tested and has been applied successfully in many high traffic products in Baidu, Sina and other' and is an app in the development category. There are more than 50 alternatives to Yaf for a variety of platforms, including Mac, Windows, Linux, Web-based and Self-Hosted apps. The best Yaf alternative is jQuery, which is both free and Open Source. Other great apps like Yaf are Angular, Meteor, Express and DHTMLX.