Get Your XUL Development Project Started Today!

Post your XUL development project on Upwork and find freelance XUL designers to build cross-browser XUL plugins for all major applications (e.g. Firefox, Opera, Chrome) or native extensions for IE or Safari to pull data and functions from your web application, or to modify your app’s UI (XUL buttons, windows, menus). Using XUL, XPCOM and JavaScript, these developers can design plugins for custom cross-platform applications with IM chat and file sharing or sync options, develop social media add-ons and toolbars to allow for CSS modifications and banners with dynamic updates, or transpose your Firefox extensions to other browsers (e.g. Internet Explorer toolbars).

XML User Interface Language (XUL) is Mozilla’s XML-based UI markup language. On Upwork, the world’s largest online workplace, experienced XUL developers and UI designers can design XUL browser frames or Thunderbird extensions - even help you install and configure the XULRunner environment or develop XUL applications and extensions to be loaded from web servers and displayed in compatible browsers with Remote XUL.

Browse XUL job posts for project examples or post your job on Upwork for free!

XUL Job Cost Overview

Typical total cost of Upwork XUL projects based on completed and fixed-price jobs.

Upwork XUL Jobs Completed Quarterly

On average, 0 XUL projects are completed every quarter on Upwork.


Time to Complete Upwork XUL Jobs

Time needed to complete a XUL project on Upwork.

Average XUL Freelancer Feedback Score

XUL Upwork freelancers typically receive a client rating of 4.08.

Last updated: October 1, 2015

Popular XUL Searches

Clear all filters

Pankaj B.

Pankaj B. Agency Contractor

TYPO3, iPhone, Android, Magento, .NET, PHP, Joomla, Wordpress, experts

India - Tests: 7 - Portfolio: 2

I am seeking TYPO3, Joomla, Magento projects and mobile app development projects specially in iOS and Android.

Associated with: DRC Systems, DRC Systems

$20.00 /hr
422 hours

Adam P.

Adam P.

4th Year Comp Sci Student.

Canada - Tests: 4 - Portfolio: 3

I have been involved in application development for over 5 years. I am close to completing my University Degree and looking to gain more experience. I am also looking to expand my knowledge in more programming languages. I have worked on everything from PHP ecommerce stores to C++ window hooks. I am experinced in the following languages and technologies: * PHP/HTML/DHTML * Javascript * XUL * Java/JSP/JEE * C++ * Linux Administration * C#

$22.22 /hr
0 hours

Branko Stefanovic

Branko Stefanovic Agency Contractor

Senior Web Developer

Serbia - Tests: 2

7+ years of programming experience and 3+ years of Javascript/C# experience. Application and system developer, Database Administrator and Project Manager in a wide variety of business and industrial applications. Experienced in web design and software implementation. Specialties: .NET (C# and - Memory Management/Cryptography/Runtime Compilation/Networking), Javascript(jQuery, Mozilla XPCOM API, HTML5), PHP (OOP, CodeIgniter, CakePHP, cURL, Shell Interaction), Shell Scripting (bash), Unix (RedHat, CentOS), OSX Current Occupation: PHP Web/CLI Developer (HTML,Javascript,CSS as well) Particularly interested in long term projects which may come to be challenging and use new technologies which I'm still not familiar with. Basically, I'm interested in always learning something new and further expansion of my current knowledge. Best attribute: Relaxed, hard working with a teaspoon of humor and capabilities of meeting the deadlines in time.

Associated with: N-Finity

$25.00 /hr
1,867 hours

Tin L.

Tin L.

IT engineer - Web & Firefox developer XUL,XSL,AJAX,CSS,PHP,JAVA EE,RDF


I am a french IT engineer. I got my degree at Polytech'Tours DI (http://www My principal interest centers are web technologies. I have good skills in XUL, XBL, XSL, RDF, AJAX, CSS, HTML, Javascript, Java EE, PHP, MySQL since they are programming languages I have used the most. I developed for projects like OsCommerce (online trading), OpenSi (online accounting) or Firefox Ebay Companion in which I added the automatic bidding (personal use). My secondary skills are: C, C++, UML. I also have good knowledge of those tools: Apache, Tomcat, SVN, Trac, Eclipse, Mylyn, LateX/Lyx, Wiki ... I use the Linux operating system Debian everyday. I am also very interested by recognition of forms, AI, neural networks and the assembly language.

$52.22 /hr
168 hours

Dmitry K.

Dmitry K.

Browser addons/toolbars and Windows/Mac applications.

Russia - Tests: 2 - Portfolio: 16

Software developer since 2003. Developing: -Browser addons: Toolbars, addons(page modifications, code injection, video downloaders, user<->site interaction, Facebook integration). -Windows/Mac applications - GUI and silent apps, adware apps, system tools, screen grabbers, screen protectors. -Server scripts - complex nodejs scripts(video downloaders, page parsers), conversion from browser addons to nodejs, PHP/MySQL backends/site parsers Technologies I use: MS Visual Stuido 6.0-2010, MFC/ATL/WTL/STL/boost. Javascript/XUL/XML/JSON/HTML. PHP/MYSQL/NodeJS XCode Delphi/CPP Builder. Feel free to contact me for any questions or get a free quota Regards, Dmitry

100% Job Success
$55.56 /hr
2,580 hours

Gago G.

Gago G.

Web developer

Armenia - Tests: 1

My name is Gagik Mkrtchyan . Quality is never an accident, it is always the result of high intention, sincere offort, intelligent direction and skillful execution. It represents the wise choice of many alternatives.I have developed a wide range of websites using HMTL, DHTML, PHP, MySQL,Javascript(jQuery,Ajax),MVC. My core competency lies in complete end-end management of a new website development project, and I am seeking opportunities to build websites from the ground up for you or your business.I also have experience in the following areas: Zend and Codeigniter frameworks and SQL, OOP , and software design,testing and CRM development.

67% Job Success
$15.00 /hr
1,161 hours

Alex I.

Alex I.

Desktop applications, extensions developer

Ukraine - Portfolio: 13

Huge experience in GUI development, plug-ins and extensions for Internet Explorer, FireFox, GoogleChrome. Development cleaners/fixers solutions, localization process realization. Strong debugging skills. Development of RAM boosters, System optimizers, Parental control applications, Monitoring software and Log viewers. Strong mathematical skills, 3D-software development.

100% Job Success
$23.00 /hr
1,824 hours

Michael Kaply

Michael Kaply

Firefox Extension Developer

United States - Tests: 1 - Portfolio: 3

I've been developing and customizing web browsers since 1996. In my 15+ years at IBM, I was a developer or team lead for OS/2 based browsers, including Netscape Navigator, IBM Web Browser and Firefox. During my time at IBM, I also focused on making the enterprise deployment of Firefox easier, which included developing the CCK Wizard Firefox extension which helps enterprises customize Firefox. The CCK Wizard is used by a number of large companies, including IBM. Other extensions I've developed include Operator which enables microformats inside of Firefox and IE8 Activities which is an implementation of the IE8 Accelerators functionality for Firefox. After leaving IBM, I founded Kaply Consulting. Kaply Consulting specializes in customizing Firefox and has helped various clients, including companies like Brand Thunder, customize Firefox to meet their needs. They’ve also assisted companies like SurfEasy in customizing Firefox. I can help with customizing or deploying Firefox, or creating Firefox extensions.

100% Job Success
$138.89 /hr
29 hours