Lightweight MVC is a PHP implementation of the MVC design pattern. It is small and ideal for learners. There is no view loader, so all public methods and variables inside the controllers will be exposed to the views. It uses a library system to make it easy to move your codebase to and from other MVC implementations.
Extended MySQLi implements a MySQL database access wrapper using the MySQLi extension. It is based on the Reduced MySQLi class originally written by Mertol Kasanan. This version can account the memory usage and log the executed queries in the current page. It can also cache the query results in an XML file.