Files with xul file extension are related XML User Interface Language and used for its default file format.

Detailed description

Software that open xul file

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XUL file extension - Firefox XML User Interface Language

What is xul file? How to open xul files?

File type specification:

Source code and script file type icon Source code and script file type

xul file icon: xul filetype icon

The xul file extension is related to Firefox browser and used for its user interface files.

XUL (pronounced zool and it rhymes with cool) was created to make development of the Mozilla browser easier and faster. It is an XML language so all features available to XML are also available to XUL.

Most applications need to be developed using features of a specific platform making building cross-platform software time-consuming and costly.

A number of cross-platform solutions have been developed in the past. Java, for example, has portability as a main selling point. XUL is one such language designed specifically for building portable user interfaces. It takes a long time to build an application even for only one platform. The time required to compile and debug can be lengthy. With XUL, an interface can be implemented and modified quickly and easily.

XUL has all the advantages of other XML languages. For example XHTML or other XML languages such as MathML or SVG can be inserted within it. Also, text displayed with XUL is easily localizable, which means that it can be translated into other languages with little effort.

MIME types:

Updated: April 17, 2024

The default software associated to open xul file:

Firefox icon

Mozilla Corporation logoFirefox  Microsoft Windows software

Company or developer:
Mozilla Corporation

Firefox is very popular free open source web browser with many features.
Firefox supports tabbed browsing, private browsing, spell checking, incremental find, bookmarking etc. Other features can be added via extensions and add-ons, such as NoScript, Tab Mix Plus. FoxyTunes, Web Developer.

Help how to open:

Use any source code editor to view content of *.xul files.

How to convert:

As far as we know, this .xul file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

Related links:

XUL XML User Interface Language overview

List of software applications associated to the .xul file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open xul file, edit xul file, convert xul file, view xul file, play xul file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting xul files.

Software that open xul file - Firefox XML User Interface Language

Programs supporting the exension xul on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for open xul file action.

Microsoft Windows:

Apple macOS / Mac OS X:

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