FuelPHP is a modular, extendable, and flexible PHP framework. The full-stack framework supports the MVC pattern as well as its evolved version Hierarchical Model-View-Controller (HMVC) at the architecture level. It addresses security concerns by providing features such as input and URI filtering and output encoding. It comes with its own authentication framework, with many other sophisticated features and backed with good documentation. FuelPHP is suitable for delivering end-to-end web solutions of diverse sizes and complexities.