What is XULRunner?
XULRunner is software that provides a runtime environment for XUL-based programs. The software was developed by Mozilla Foundation to provide a runtime system for their applications such as Mozilla Firefox, Thunderbird, Songbird, SeaMonkey and Flickr Uploader.
XULRunner provides a backend support for the mentioned Mozilla applications during the install or uninstall process of the apps, as well as updates and upgrades for the applications.
The application was developed to replace Gecko, also a runtime system from Mozilla. XULRunner however, is integrated with some of the features originally provided n Gecko, such as XPCOM, which is the cross-platform COM of Mozilla; Gecko rendering engine, XMLHttpRequest, and DOMParser.
It also includes Application Programming Interfaces (APIs) such as extension manager and a find toolbar on top of the APIs for installing/uninstalling and updating/upgrading XUL-based applications. Developers are working on including an auto-updater and IPC services to provide a communication gateway between Gecko-enabled applications.
The most current stable release of the software is version 1.9.2. This is a cross-platform program compatible with Windows, Mac OS X and Linux.
File types supported by XULRunner
Our users primarily use XULRunner to open these file types:
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