GraPHP vs Kohana: What are the differences?

GraPHP: A PHP graph DB web framework *. The goal of this project is to build a lightweight web framework with a graph DB abstraction. It should be very easy to create the graph schema with no knowledge of of how the data is stored. Also, the schema should be incredibly flexible so you should never need migrations when adding new models (nodes), connections (edges), or data that lives in nodes; *Kohana:** An elegant HMVC PHP5 framework. Kohana is an elegant, open source, and object oriented HMVC framework built using PHP5, by a team of volunteers. It aims to be swift, secure, and small.

GraPHP and Kohana belong to "Frameworks (Full Stack)" category of the tech stack.

GraPHP and Kohana are both open source tools. It seems that Kohana with 1.61K GitHub stars and 464 forks on GitHub has more adoption than GraPHP with 135 GitHub stars and 5 GitHub forks.