Providing community resources for independent Mozilla development

Welcome to There is only XUL [dot org]! Your anti-profit non-organization for resource links, free project advertizing, and the secrets to the mozillasphere!

I ain't afraid of no code!

In order to fulfill the core mission statement for which this site was originally created, it needs to be expanded beyond this page and the code cross-reference to providing the very basis and tools for anyone to reclaim their Netscape heritage. These resource projects are not intended to be used like a commercial product but resource tools that can be forkable in and of themselves. However, their largely upstream, if not mainstream, nature provides flexibility when better (or more preferred) solutions are not readily available.

Regardless of this expanded focus for There is only XUL, it shall not drastically impact this index as the front page. This site is nothing without the various, albeit divided, projects and communities listed below.


“If you believe that mozilla.org is just a smokescreen, that the organization exists only to swindle you out of your hard work for the benefit of some shambling inhuman beast of a corporation, then don't contribute to it.
Take the source code, and build your own browser based on it. Fork the tree. Do what's right.”
— Jamie Zawinski (23-Nov-98)

The Original Fork

The SeaMonkey Project has been an inspiration to many for some 20 years as it has charted its own unique course and continues to navigate towards The Future™.

SeaMonkey Internet Application Suite by The SeaMonkey Project
SeaMonkey is a direct descendant of the Mozilla Suite and Netscape Communicator and consists of a web browser, an e-mail and news client program, an HTML editor and an IRC client.

Classical XUL Internet Clients

These are applications that stick to an interpretation of classical Mozilla circa 2008-2014. Many are no longer active and a few evolved.

Memory Wall

  • Netscape Communicator
  • Classilla
  • TenFourFox
  • Nvu
  • Kompozr
  • BlueGriffon
  • Netscape Browser (Firefox-based)
  • Flock Social Browser (Firefox-based)
  • Cyberfox
  • Waterfox (Classic)
  • pcxFirefox
  • Thunderbird-based Eudora
  • The Original GeckoFx
  • Various Non-Spamvertizement Comodo Applications
  • Every Mozilla XULRunner-based Project.
  • FossaMail
  • UXP-based XULRunner (Take 1)
  • Ambassador IRC Client
  • Binary Outcast Interlink Mail & News
  • Postbox E-mail Client
  • So many more…

Pale Moon by Moonchild Productions
Pale Moon is an Open Source, Goanna-based web browser built on the Unified XUL Platform available for reasonably modern Operating Systems, focusing on familiarity, efficiency and ease of use.

Epyrus by Athenian200
The idealized e-mail client and companion to Pale Moon.

Arctic Fox Web Browser by Riccardo
Arctic Fox started as a forked and rebranded Pale Moon 27.9.4 (Tycho) and retains its classic interface. Many fixes and enhancements have been imported from Firefox and TenFourFox. For Mac and Linux!

Basilisk Browser by djames1 (aka Basilisk-Dev)
Cleaned up Firefox 52 (Australis) on UXP. Originally created by Moonchild Productions with (extremely reluctant) contributions from Binary Outcast.

RT's Free Soft UXP Builds by Roytam1 (and MSFN Community Contributors)
Unified XUL Platform Applications modified to work on Windows XP and other legacy Microsoft Operating Systems.

Modernized Browsers and E-mail Clients

These projects have gone beyond XUL (if there is such a thing) to try and bring Modern Mozilla to heel.

Waterfox by BrowserWorks Ltd
Fast and Private Web Browser based on Firefox

Betterbird by The BetterBird Project
Betterbird is a fine-tuned version of Mozilla Thunderbird, Thunderbird on steroids, if you will. Betterbird is better than Thunderbird in three ways: It contains new features exclusive to Betterbird, it contains bug fixes exclusive to Betterbird and it contains fixes that Thunderbird may ship at a later stage.

Zen Browser by The Zen Browser Project
Beautifully design, privacy-focused, and packed with features that cares about your experience, not your data.

MyPal by Fedor2 (and MSFN Community Contributors)
Looking for the perfect Windows XP web browser? Mypal is a current and maintained browser for Windows XP. Turn that old PC into something useful!