* Build applications quickly: Many common components are included: translation tools, database access, code profiling, encryption, validation, and more. * Use specific libraries and tools: Extending existing components and adding new libraries is very easy. * Write commercial applications: Uses the BSD license, so you can use and modify it for commercial purposes. * A very fast framework: Benchmarking a framework is hard and rarely reflects the real world, but Kohana is very efficient and carefully optimized for real world usage. * Good debugging and profiling tools: Simple and effective tools help identify and solve performance issues quickly. * Know what the framework is doing: Very well commented code and a simple routing structure makes it easy to understand what is happening. * Work with objects and classes: This is an OOP framework that is extremely DRY. Everything is built using strict PHP 5 classes and objects. * Write your own code: There are no code generators and endless configuration files, so setting up is fast and easy. * Community support: A very active community forum and IRC channel means that most questions are answered very quickly.

-Model-View-Controller (MVC) design pattern. -Database Access Objects (DAO), Query Builder, Active Record, DB Migration. -AJAX-enabled widgets. -Authentication and authorization. -Yii is equipped with many security measures to help prevent your Web applications from attacks such as SQL injection, cross-site scripting (XSS), cross-site request forgery (CSRF), and cookie tampering. -Yii supports data caching, page caching, fragment caching and dynamic content.