Fusebox is a framework for building web applications. It is meant to make your applications easier to create and maintain. It also makes team development easier. It does this by helping you structure your application into discrete pieces. Fusebox consists of a set of core files which handle much of the ‘plumbing’ necessary when creating a web application. A Fusebox application is made up of Circuits. A Circuit corresponds to a directory in your application. Within each circuit are one or more Fuseactions. A Fuseaction is a request handler. And finally, a Fuseaction does its work by executing one or more Fuses. Fuses are individual PHP templates such as display or query files that are specific to the application you’re developing. The framework uses XML configuration files to define the application settings as well as declaring what each Circuit does and how Fuseactions within each Circuit execute. There is a core set of XML grammar that is used to create these files. The framework is fully extensible via Plugins, which allow you to extend the core functionality without having to modify the core files. It also supports Custom Lexicons, which allow you to extend the XML grammar with your own tags. As a result, Fusebox is very flexible and can support a wide range of development needs. Fusebox does not force the Model-View-Controller (MVC) pattern or Object-Oriented Programming (OOP) on the developer. However, either or both of these development approaches can be used with Fusebox with ease.