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Mozilla Firefox Nightly

brew install --cask firefox@nightly v154.0a1,2026-06-19-04-41-08

Pre-release Firefox build with experimental features updated nightly for testing.

Why you might care

Install this if you want to test bleeding-edge Firefox features before they reach stable releases, or if you're a developer evaluating upcoming changes. It updates daily and may contain bugs.

Categories

Alternatives

Chrome Canary Edge Canary Safari Technology Preview
464
30-day installs · #502
986
90-day · #644
3.1k
365-day · #735

Links

Blurb generated by claude-haiku-4-5 on today.

Raw metadata
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  "alternatives": [
    "Chrome Canary",
    "Edge Canary",
    "Safari Technology Preview"
  ],
  "artifacts": [
    {
      "app": [
        "Firefox Nightly.app"
      ],
      "target": "/Applications/Firefox Nightly.app"
    },
    {
      "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/Saved Application State/org.mozilla.firefox.savedState",
            "~/Library/WebKit/org.mozilla.firefox"
          ]
        }
      ]
    }
  ],
  "auto_updates": 1,
  "categories": [
    "browser"
  ],
  "deprecated": 0,
  "deprecation_reason": null,
  "desc": "Web browser",
  "disable_reason": null,
  "disabled": 0,
  "display_name": "Mozilla Firefox Nightly",
  "enrichment_fetched_at": "2026-06-20T22:42:47+00:00",
  "first_seen": "2026-06-20T00:47:34+00:00",
  "full_token": "firefox@nightly",
  "github_default_branch": null,
  "github_last_commit_at": null,
  "github_readme_excerpt": null,
  "github_repo": null,
  "github_stars": null,
  "github_topics": [],
  "homepage": "https://www.mozilla.org/firefox/channel/desktop/#nightly",
  "homepage_og_description": "Experience cutting-edge browser features in pre-release versions: Firefox Developer Edition, Firefox Beta and Firefox Nightly. Download now!",
  "homepage_og_image": "https://www.firefox.com/media/img/firefox/flare/og.4d50d9b1674b.png",
  "homepage_title": "Download and test future releases of Firefox for desktop, Android and iOS.\n \u2014 Firefox.com",
  "installs_30d": 464,
  "installs_365d": 3076,
  "installs_90d": 986,
  "last_seen": "2026-06-20T00:47:34+00:00",
  "llm_generated_at": "2026-06-20T23:04:28+00:00",
  "llm_model": "claude-haiku-4-5",
  "names": [
    "Mozilla Firefox Nightly"
  ],
  "one_liner": "Pre-release Firefox build with experimental features updated nightly for testing.",
  "rank_30d": 502,
  "rank_365d": 735,
  "rank_90d": 644,
  "raw_hash": "0221ea4357f0207d",
  "ruby_source_path": "Casks/f/firefox@nightly.rb",
  "tap": "homebrew/cask",
  "token": "firefox@nightly",
  "version": "154.0a1,2026-06-19-04-41-08",
  "why_use_this": "Install this if you want to test bleeding-edge Firefox features before they reach stable releases, or if you\u0027re a developer evaluating upcoming changes. It updates daily and may contain bugs."
}