| Developer(s) | Mozilla Foundation and community |
|---|---|
| Stable release | 7.0 / September 23, 2011 |
| Preview release | 8.0b6 / November 3, 2011 |
| Written in | C++, XUL, XBL, JavaScript |
| Operating system | Cross-platform |
| Type | Runtime environment |
| License | Mozilla tri-license |
| Website | developer.mozilla.org/en/XULRunner |
XULRunner is a runtime environment developed by the Mozilla Foundation to provide a common back-end for XUL-based applications. It replaced the Gecko Runtime Environment, a stalled project with a similar purpose.[1]
The first stable developer preview of XULRunner was released in February 2006, based on the Mozilla 1.8 code base. As of September 2011[update] the most recent stable build of XULRunner is XULRunner 7.0,[2] built from the same source code snapshot as Firefox 7.
XULRunner is a "technology experiment", not a shipped product,[3] meaning there are no "official" XULRunner releases, only stable builds based on the same code as a corresponding Firefox release.
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All XUL-based applications like Mozilla Firefox, Mozilla Thunderbird, Songbird, Flickr Uploadr, SeaMonkey, Conkeror, Sunbird, Miro, Joost, and TomTom Home 2.0 run on XULRunner. Starting with version 3.0, Mozilla Firefox uses a "private" XULRunner,[4] meaning the framework is installed locally in the application directory.
The fourth version of the video game series Simon the Sorcerer, Simon the Sorcerer 4: Chaos Happens, uses XULrunner.
The eMusic website has a download application called eMusic Remote that uses XULRunner.
The Google Adwords Editor uses XULRunner,[5] as does the Evergreen ILS, a free and open-source library automation system.
In addition, the XULRunner package provides access to ActiveX Control functionality previously found in a (now defunct) third-party ActiveX Control built off the Mozilla source code. Applications using this application programming interface (API) may function with XULRunner installed and registered.
Starting with Lotus Notes version 8.5.1, IBM deployed XULRunner to provide Notes client support for XPages applications.
A Firefox extension called XULRunner 1.9.1 is a form of malware masquerading as XULRunner that redirects Google search links to different websites.[6][7][8]
In a sample analysed on 3 August 2011, it was inserting an iframe into searches using the domain:
http://<dotm>.paulwebber.net/ffeed.php?n=<malware distributors tag?>
As of 3 August 2011[update], it points at the IP 95.211.100.72 at leaseweb.
On a user's Windows computer, the malware is stored in an unusual location in the Local AppData folder, rather than in the usual Firefox profile or program directories.
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