The other browsers are based on Mozilla Firefox's search engine through it's use of open code source for others to develop.

I suppose Mozilla would prefer you to use Firefox but it is up to you which you would like to use. I will note though that it does take long for these others to make the code changes for security reasons. Just my observations about time and length for them to make available a new release.

Fyi: Firefox now is 64bit. From the Firefox Tool Bar/Menu Bar Help --> About will show you that it is probably 64bit and the version and it also contacts the update servers also.

Up to you, run what pleases you.

https://www.mozilla.org/firefox/all/ Full Version Installers for 64 and 32 bit. Note : Firefox 57 Quantum release date Nov 14th https://www.mozilla.org/en-US/firefox/quantum/ Note : Legacy Extensions will be disabled and or removed.

Please let us know if this solved your issue or if need further assistance.

Thank you

Pkshadow said

The other browsers are based on Mozilla Firefox's search engine ...

Firefox is not a "search engine"! https://en.wikipedia.org/wiki/Web_search_engine

Firefox and the others are Web browsers which can use a search engine such as Google, Bing, and Yahoo among many others. https://en.wikipedia.org/wiki/Web_browser

What Firefox shares now with the others is the Gecko web browser engine. https://en.wikipedia.org/wiki/Gecko_%28software%29

But that is changing. Firefox is transitioning to using Servo and Quantum. https://en.wikipedia.org/wiki/Servo_%28layout_engine%29 https://en.wikipedia.org/wiki/Quantum_%28software%29 And by the time the transition is complete very little of "Gecko" will remain in Firefox.

Palemoon has moved to using their own Goanna web browser engine. https://en.wikipedia.org/wiki/Goanna_%28software%29

As far as Waterfox is concerned, I have no idea if that project will transition, too; or how the developers of that 3rd party fork of Firefox / Gecko will proceed.

Hank81 said

Seems only Firefox is mentioned as the main browser for Mozilla. I prefer Warerfox because it supports 64bit. So who am I supporting, and/or does it matter?

Waterfox and Palmoon are third-party builds and were started by the authors in part because Mozilla did not have Win64 builds of Firefox for Releases then. Theses third-party builders did it even though the code for Win64 builds was not close to being stable for Release state for a good while still at time.

64-bit Firefox (Win64) for Windows has existed since Firefox 42.0 Release (November 3, 2015) and has been listed on www.mozilla.org/firefox/all/ since Firefox 43.0 Release.

Nightly is a development channel name for Firefox and is not a third-party or a codename. Release < Beta < Nightly. If you see a a1 on end of a Firefox version then it is a Nightly build. The Nightly channel builds can get two build updates a day and the checkins can sometimes leads to issues until fixed, finished or reverted. It is meant more for Testers and not regular Firefox users.

The best place to gain an understanding of Waterfox is https://www.waterfoxproject.org/#about

If you start with many tabs: expect Waterfox to start faster than Firerfox ESR 52.5.2.

Expect Waterfox to be usable with plugins that are not usable with Firefox Quantum.

(Next week I might test the Microsoft Office 2013 plugin (15.0.4849.1000).)

And so on … generally, Waterfox is an excellent alternative to Firefox 56.x (on FreeBSD; YMMV).