Build Desktop Applications With PHP: SiteFusion

SiteFusion is an open source and server-based development platform where a XUL client runs code written with PHP.

The application runs on a server generating JavaScript commands but looks and behaves like native desktop applications.

The output is platform-independent and can access the client filesystem, run programs, play sounds ,etc.

There are no extra configurations required than running a website as the XUL client connects to a regular web server.

And, it offers a two-way real-time ZLib compressed communication which is great for building real-time applications.