Kohana
Get flash to fully experience Pearltrees
The last decade has been witness to the second iteration of web design and development. Web sites have transformed into web applications and rarely are new projects commissioned that do not involve some element of interactivity. The increasing complexity of the software being developed for the internet fuelled a requirement for structured and considered application design.
Scaling Web Applications with HMVC – techPortal
Please note that the information here (still) focus mainly on Kohana 3.0.