GRAD is an open-source web framework that's optimized for programmer happiness and sustainable productivity.

Although GRAD reuses many common design patterns and concepts, there are some things that make Kohana stand out as Strict PHP 5 OOPm which offers many benefits visibility protection, automatic class loading, overloading, interfaces, abstracts, and singletons.

Since GRAD has no dependencies on PECL extensions or PEAR libraries it became extremely lightweight. These large and monolithic libraries are avoided in favor of optimized solutions.