Mozilla FTP - Download Latest Firefox

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Latest (~sort of~ "nightly") Firefox Developer Edition, Code-Name 'Aurora'
https://ftp.mozilla.org/pub/firefox/nightly/latest-mozilla-aurora/

This is the full offline-installer, not the 'installer-stub' you get from the official website.




Latest Nightly-Build from trunk Firefox
https://archive.mozilla.org/pub/firefox/nightly/latest-mozilla-central/

You can download a localised (or "localized".. if you're an American..) language-specific version on https://ftp.mozilla.org/pub/firefox/nightly/latest-mozilla-aurora-l10n/.




Latest Beta
https://ftp.mozilla.org/pub/firefox/nightly/latest-mozilla-beta-l10n/

It seems that there is no generic package so you must choose one of the localised-packages,
for example https://ftp.mozilla.org/pub/firefox/nightly/latest-mozilla-beta-l10n/firefox-47.0.en-GB.win64.installer.exe or https://ftp.mozilla.org/pub/firefox/nightly/latest-mozilla-beta-l10n/firefox-47.0.en-GB.win64.zip




You may also download ESR (extended support release) for latest or not-so latest versions of Firefox, which is mostly useful if you don't want to keep updating the core-browser's version a lot..
Version 45: https://ftp.mozilla.org/pub/firefox/nightly/latest-mozilla-esr45-l10n/
And version 52: https://ftp.mozilla.org/pub/firefox/nightly/latest-mozilla-esr52-l10n/

Here too, you must choose a localised-download..




Browser https://ftp.mozilla.org/pub/firefox/nightly/ for "by date" downloads or any other variation of Firefox you may download, in-full.




If you need any help finding the correct links for your Windows-x64 PC,
just run the following query, and you'll get the download link:
document.querySelector('a[href*="firefox-"][href*="win64"][href$=".zip"]:not([href*=".tests"]):not([href*="symbols"])').href