XULRunner is a free platform for running components for Firefox and Thunderbird, designed for XUL XPCOM application developers and, in fact, is an analogue of COM from Microsoft. XULRunner helps you get rid of a huge number of conditional compilation directives when creating Gecko applications. Several "stand-alone" programs were created in this environment as well. Musicians: Musicbee, Rhythm Heart, Music Bee Mini/Multi, and Sonicbird Plus. Instantbird Player: Instantbird IM client, Conkeror Player.It has also launched eMusicRemote digital music purchase tools, as well as numerous other digital music resources. Networks access modules are implemented in a few programmes using XULRunner technology. By using libxul, a component of Firefox, developers can customize their own products to utilize some of Mozilla's technologies.
This program was originally developed to "ground" Mozilla toolbars and other software components. The graphical shell for XULRunner does not exist on its own. A basic list of commands and options can then be used to launch the platform.