Mozilla Firefox Nightly

Mozilla · A macOS desktop browser build for exploring and testing upcoming Firefox releases.

CaskBrowsersAuto-updatesApple silicon · Intel

Homepage

From homebrew/cask

30-day installs161#518 in App

1-year installs3.4KLast 365 days

Latest version160.0a13 days ago · Oct 8

Download size185MBarm64 / x86_64 · dmg

Release cadenceEvery 2 weeks2 releases in 30 days

System and architecture

System requirements: Not confirmed

Platform availability

macOS 27 · Intel · 160.0a1,2026-10-11-08-14-12 Not confirmed
macOS 27 · Apple chip · 160.0a1,2026-10-11-08-14-12 Not confirmed
macOS 26 · Intel · 160.0a1,2026-10-11-08-14-12 Not confirmed
macOS 26 · Apple chip · 160.0a1,2026-10-11-08-14-12 Not confirmed
macOS 15 · Intel · 160.0a1,2026-10-11-08-14-12 Not confirmed
macOS 15 · Apple chip · 160.0a1,2026-10-11-08-14-12 Not confirmed
macOS 14 · Intel · 160.0a1,2026-10-11-08-14-12 Not confirmed
macOS 14 · Apple chip · 160.0a1,2026-10-11-08-14-12 Not confirmed
macOS 13 · Intel · 160.0a1,2026-10-11-08-14-12 Not confirmed
macOS 13 · Apple chip · 160.0a1,2026-10-11-08-14-12 Not confirmed
macOS 12 · Intel · 160.0a1,2026-10-11-08-14-12 Not confirmed
macOS 12 · Apple chip · 160.0a1,2026-10-11-08-14-12 Not confirmed
macOS 11 · Intel · 160.0a1,2026-10-11-08-14-12 Not confirmed
macOS 11 · Apple chip · 160.0a1,2026-10-11-08-14-12 Not confirmed

View full declaration

{
  "macos": {}
}

Tap: homebrew/cask
Also known as: Mozilla Firefox Nightly · firefox@nightly
Download URL: ftp.mozilla.org/pub/firefox/nightly/2026/10/2026-10-11-08-14-12-mozilla-central/firefox-160.0a1.en-US.mac.dmg
SHA-256: e3f7d5b294a0bf19…
Homebrew definition: github.com/homebrew/homebrew-cask/blob/HEAD/Casks/f/[email protected]
formulae.brew.sh: formulae.brew.sh/cask/firefox@nightly

Installation and removal contents

Install app
Source file: Firefox Nightly.app
Declared destination: /Applications/Firefox Nightly.app
View full declaration
```
{
  "app": [
    "Firefox Nightly.app"
  ],
  "target": "/Applications/Firefox Nightly.app"
}
```

Remove user data zap

View full declaration

{
  "zap": [
    {
      "rmdir": [
        "~/Library/Application Support/Mozilla",
        "~/Library/Caches/Mozilla",
        "~/Library/Caches/Mozilla/updates",
        "~/Library/Caches/Mozilla/updates/Applications"
      ],
      "trash": [
        "/Library/Logs/DiagnosticReports/firefox_*",
        "~/Library/Application Support/com.apple.sharedfilelist/com.apple.LSSharedFileList.ApplicationRecentDocuments/org.mozilla.firefox.sfl*",
        "~/Library/Application Support/CrashReporter/firefox_*",
        "~/Library/Application Support/Firefox",
        "~/Library/Caches/Firefox",
        "~/Library/Caches/Mozilla/updates/Applications/Firefox",
        "~/Library/Caches/org.mozilla.firefox",
        "~/Library/Preferences/org.mozilla.firefox.plist",
        "~/Library/Preferences/org.mozilla.nightly.plist",
        "~/Library/Saved Application State/org.mozilla.firefox.savedState",
        "~/Library/WebKit/org.mozilla.firefox"
      ]
    }
  ]
}