SM Community InfraThe Originals
The SeaMonkey Project IS the original Mozilla fork in more ways than one. It 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 consists of a web browser, which is a descendant of the Netscape family, an e-mail and news client program, an HTML editor and an IRC client (ChatZilla).
Other Pioneers
- Classilla [No longer active]
- TenFourFox [No longer active]
- Kompozr [No longer active?]
Classical XUL Applications
These are applications that for better or worse stick to an interpretation of Classic Mozilla. Many are no longer active and a few evolved.
Unified XUL Platform
- Pale Moon by Moonchild Productions
- Epyrus by Athenian200
- Basilisk Browser by an Unknown Party (djames1)
- RT's Free Soft UXP Builds by Roytam1 (and MSFN Community Contributors)
- Various "debian-rebranded" Variants by The Hyperbola Project
Other Projects
- GNU IceCat
- Firefox-based Flock Social Browser
- Cyberfox
- Waterfox Classic and earlier
- 64bit Firefox Rebrands
- Thunderbird-based Eudora
- The Original GeckoFx
- Every XULRunner-based Project (UXP Doesn't count).
- Anything that used MozEmbedding in the late-2000s
- Others…
Modern Web Platform Applications
These projects have gone beyond the quantum divide, past classical XUL, to continue the good fight in arbitrarily charted waters. Some are newcomers to the fray.
Zen Browser by The Zen Browser Project
Beautifully design, privacy-focused, and packed with features that cares about your experience, not your data.
Betterbird by The BetterBird Project
Betterbird is a fine-tuned version of Mozilla Thunderbird, Thunderbird on steroids, if you will.
Waterfox by BrowserWorks Ltd
Fast and Private Web Browser based on Firefox
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!
Conclusion
“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)
