You only know Mozilla as a web browser, it is also a console that aid on development of the XUL XPCOM programs. All the rich applications work as a team when it comes to initialization of the software. All Mozilla-based systems work with this when it comes to the creation and design of the project files. Although it sounds difficult, it has a comprehensive help file which offers documentation of what the functions entail. These are third-party integrations that are separate with the zip file that makes up the app.
This is a tool meant for programmers for you need little software development skills to execute some of the functions. The plugins and support extensions are must-have features, do not skip the procedure even if the app allows you to do it. You will limit yourself when it comes to some of the operations. The moment you mention runtime in app development then you are sure that programming skills must be employed. This is the toolkit behind the value-added tools for Mozilla and Thunderbird on the OS.
XULRunner is licensed as freeware for PC or laptop with Windows 32 bit and 64 bit operating system. It is in others programming category and is available to all software users as a free download.