Molajo is a fork of Joomla created in 2009 to address some perceived limitations of Joomla, including redundant code, a complex ACL system, and lack of MVC abstraction. It uses the Joomla framework but abstracts the core application into separate MVC layers for improved flexibility. Key Molajo extensions include an administrator template called Minima, a template framework called Construct, and an extension builder. The document discusses the motivations for creating Molajo and some of its architectural differences from Joomla.