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Mozilla Firefox Nightly for Mac

Web browser

Quick answer: Mozilla Firefox Nightly is a web browser for macOS. Install it with brew install --cask firefox@nightly. The licence is not declared in Homebrew metadata. It has 222 Homebrew installs in the last 30 days.

What Mozilla Firefox Nightly is

Mozilla Firefox Nightly is a web browser for macOS: web browser.

It is distributed as a Homebrew cask, which installs a .app bundle into your Applications folder. Homebrew only automates the download and install step; the licence terms come from the vendor.

How to install Mozilla Firefox Nightly

  1. Open Terminal (press ⌘ + Space and type “Terminal”).
  2. If Homebrew is not installed yet, run the installer below once.
  3. Run brew install --cask firefox@nightly.

Homebrew installer, if you need it:

Prefer a graphical installer? Download it from the official site. MacPicks never hosts or mirrors binaries — the Homebrew command always pulls from the vendor's own release.

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Frequently asked questions

How do I install Mozilla Firefox Nightly on Mac?

Run brew install --cask firefox@nightly in Terminal. This requires Homebrew; if you do not have it, install it first with the command below.

Is Mozilla Firefox Nightly open source?

Homebrew's metadata does not declare a licence for this app, so the official site is the authoritative source.

Does Mozilla Firefox Nightly run on Apple silicon?

Yes, as a universal binary.

How popular is Mozilla Firefox Nightly?

It was installed 222 times in the last 30 days according to Homebrew analytics, ranking #2369 in this catalogue.

What version of Mozilla Firefox Nightly is current?

The latest packaged version is 161.0a1,2026-10-24-21-50-18.