Mozilla Firefox ESR for Mac
Web browser
brew install --cask firefox@esr. Homebrew metadata does not declare a licence. Homebrew recorded 117 installs in the last 30 days. What is Mozilla Firefox ESR?
Mozilla Firefox ESR is a macOS web browser: Web browser.
It is distributed as a Homebrew cask, which installs the .app into /Applications. Homebrew only automates download and installation; licence terms come from the vendor.
How to install Mozilla Firefox ESR
- Open Terminal (press ⌘ + Space and type “Terminal”).
- If Homebrew is not installed, run the install command below first.
- Run
brew install --cask firefox@esr.
Install Homebrew first if needed:
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Frequently asked questions
How do I install Mozilla Firefox ESR on a Mac?
Run brew install --cask firefox@esr in Terminal. This requires Homebrew; install it first with the command below if needed.
Is Mozilla Firefox ESR open source?
Homebrew metadata does not declare a licence for this app. Check the official website for the exact terms.
Does Mozilla Firefox ESR run on Apple silicon?
Yes, it ships a universal binary.
How popular is Mozilla Firefox ESR?
Homebrew analytics recorded 117 installs in the last 30 days, ranking it #3205 in this catalogue.
What version of Mozilla Firefox ESR is current?
The latest packaged version is 153.5.1.
Data comes from the public Homebrew API, last updated 2026-10-27. Install counts only include Homebrew installs and are not total users.