{
  "@context": [
    "https://schema.org",
    {
      "nuanyue": "https://www.nuanyue.com/ns#"
    }
  ],
  "@type": "SoftwareApplication",
  "@id": "https://www.nuanyue.com/software/firefox/#software",
  "name": "Firefox",
  "description": "Mozilla's free and open-source web browser for macOS, with an independent rendering engine and its own extension ecosystem.",
  "url": "https://www.nuanyue.com/software/firefox/",
  "mainEntityOfPage": "https://www.nuanyue.com/software/firefox/",
  "operatingSystem": "macOS",
  "applicationCategory": "UtilitiesApplication",
  "publisher": {
    "name": "Mozilla",
    "url": "https://www.mozilla.org/"
  },
  "sameAs": [
    "https://www.firefox.com/"
  ],
  "softwareVersion": "157.0",
  "license": "MPL-2.0",
  "offers": {
    "@type": "Offer",
    "price": "0",
    "priceCurrency": "USD"
  },
  "nuanyue:record": {
    "schemaVersion": 1,
    "id": "software:firefox",
    "slug": "firefox",
    "name": "Firefox",
    "type": "SoftwareApplication",
    "entityType": "web browser",
    "description": "Mozilla's free and open-source web browser for macOS, with an independent rendering engine and its own extension ecosystem.",
    "shortDescription": "Mozilla's open-source browser with its own engine.",
    "answer": "Firefox is Mozilla's web browser and the only mainstream one that does not use Chromium: it runs on Gecko, Mozilla's own engine, which is why it is the alternative when a site or a standard behaves badly in Chromium browsers. It is free and open source under the Mozilla Public License. On macOS, Mozilla no longer supports version 10.14 or below and directs those users to Firefox ESR, the extended-support release that keeps receiving security fixes. It suits anyone who wants browser diversity rather than a second Chromium.",
    "page": "https://www.nuanyue.com/software/firefox/",
    "dataUrl": "https://www.nuanyue.com/data/software/firefox.json",
    "categories": [
      "utilities"
    ],
    "tags": [],
    "platform": [
      "macOS"
    ],
    "minOsVersion": "macOS 10.15",
    "architecture": [],
    "featured": false,
    "pricing": "open-source",
    "pricingDescription": "Free and open source under the Mozilla Public License 2.0.",
    "license": "MPL-2.0",
    "currentVersion": "157.0",
    "releaseDate": "2026-09-29",
    "openSource": true,
    "website": "https://www.firefox.com/",
    "documentation": "https://support.mozilla.org/",
    "download": "https://download.mozilla.org/?product=firefox-latest-ssl&os=osx&lang=en-US",
    "developer": {
      "name": "Mozilla",
      "website": "https://www.mozilla.org/"
    },
    "icon": "/apps/firefox.png",
    "features": [
      "Gecko rendering engine, independent of Chromium",
      "Extension ecosystem",
      "Private browsing mode",
      "Cross-device sync of bookmarks, history and tabs",
      "Built-in PDF viewer",
      "Tracking protection"
    ],
    "useCases": [
      "Browsing the web in a browser that does not use Chromium",
      "Testing a site against a non-Chromium engine",
      "Browsing privately with private browsing and tracking protection",
      "Syncing bookmarks, history and tabs across devices",
      "Reading PDFs in the browser's built-in viewer"
    ],
    "formats": [],
    "integrations": [],
    "pros": [
      {
        "text": "Runs on Gecko rather than Chromium, so it is the mainstream browser that does not share Chrome's rendering engine.",
        "status": "verified",
        "source": "official",
        "verifiedAt": "2026-10-04T00:00:00.000Z"
      },
      {
        "text": "Free and open source under the Mozilla Public License 2.0.",
        "status": "verified",
        "source": "official",
        "verifiedAt": "2026-10-04T00:00:00.000Z"
      },
      {
        "text": "Mozilla maintains an Extended Support Release for users on older macOS versions that no longer receive the current build.",
        "status": "developer-stated",
        "source": "official",
        "verifiedAt": "2026-10-04T00:00:00.000Z"
      }
    ],
    "cons": [
      {
        "text": "Mozilla no longer supports the current release on macOS 10.14 and below, so those users must switch to Firefox ESR.",
        "status": "verified",
        "source": "official",
        "verifiedAt": "2026-10-04T00:00:00.000Z"
      },
      {
        "text": "Because it is not Chromium-based, sites tested only against Chrome occasionally behave differently, and a small number of extensions exist only for Chromium.",
        "status": "editorially-reviewed",
        "verifiedAt": "2026-10-04T00:00:00.000Z"
      }
    ],
    "whoIsItFor": [
      "Anyone who wants browser diversity rather than a second Chromium",
      "Web developers who need to test against a non-Chromium engine",
      "Users on macOS 10.14 or below — Mozilla maintains Firefox ESR for them"
    ],
    "notFor": [
      "Anyone who needs a Chromium-only extension — a small number of extensions exist only for Chromium",
      "Users who need a browser that renders identically to Chrome — sites tested only against Chrome occasionally behave differently"
    ],
    "limitations": [
      "The current release requires macOS 10.15; macOS 10.14 and below must use Firefox ESR",
      "A small number of extensions are Chromium-only, and sites tested exclusively against Chrome occasionally render differently",
      "Apple Silicon support is not stated in the sources Nuanyue tracks"
    ],
    "firstUse": {
      "installation": {
        "value": "Download a .dmg from firefox.com and drag the app to Applications; on macOS 10.14 or below, Mozilla directs users to Firefox ESR instead.",
        "status": "verified",
        "source": "official",
        "verifiedAt": "2026-10-04T00:00:00.000Z"
      },
      "firstLaunch": {
        "value": "Offers to import bookmarks and history from another browser and to set Firefox as the default.",
        "status": "developer-stated",
        "source": "documentation",
        "verifiedAt": "2026-10-04T00:00:00.000Z"
      },
      "systemIntegration": {
        "value": "Can be set as the default browser and optionally prompts to become the default when it is not.",
        "status": "developer-stated",
        "source": "documentation",
        "verifiedAt": "2026-10-04T00:00:00.000Z"
      },
      "appleSilicon": {
        "value": null,
        "status": "unknown"
      }
    },
    "updates": [
      {
        "version": "157.0",
        "date": "2026-09-29",
        "summary": "Current stable release for macOS.",
        "status": "verified",
        "source": "official"
      }
    ],
    "faq": [
      {
        "question": "Is Firefox free?",
        "answer": "Yes. Firefox is free and open source under the Mozilla Public License 2.0, with no paid tier.",
        "status": "verified",
        "source": "official",
        "verifiedAt": "2026-10-04T00:00:00.000Z"
      },
      {
        "question": "Does Firefox still work on older macOS versions?",
        "answer": "Mozilla states Firefox is no longer supported on macOS 10.14 and below and directs those users to Firefox ESR, the Extended Support Release, which continues to receive security updates.",
        "status": "verified",
        "source": "official",
        "verifiedAt": "2026-10-04T00:00:00.000Z"
      },
      {
        "question": "What is the difference between Firefox and Firefox ESR?",
        "answer": "The regular release ships new features on a rapid schedule. Firefox ESR is held on an older codebase and receives security fixes rather than new features, which is what makes it usable on older operating systems and in managed deployments.",
        "status": "developer-stated",
        "source": "official",
        "verifiedAt": "2026-10-04T00:00:00.000Z"
      },
      {
        "question": "What is the latest Firefox version?",
        "answer": "157.0, released on 29 September 2026. The current ESR line is 140.17.0esr, with 115.42.0esr still published for older systems.",
        "status": "verified",
        "source": "official",
        "verifiedAt": "2026-10-04T00:00:00.000Z"
      },
      {
        "question": "Is Firefox based on Chrome?",
        "answer": "No. Firefox uses Gecko, Mozilla's own rendering engine. That is the main reason to choose it — it keeps a second engine in the web ecosystem rather than adding another Chromium build.",
        "status": "verified",
        "source": "official",
        "verifiedAt": "2026-10-04T00:00:00.000Z"
      }
    ],
    "relationships": [
      {
        "target": "arc",
        "type": "compared_with",
        "reason": "Both are alternative browsers, but Firefox is actively developed on its own engine while Arc is Chromium-based and in maintenance mode.",
        "verifiedAt": "2026-10-04T00:00:00.000Z"
      },
      {
        "target": "chrome",
        "type": "competitor",
        "reason": "The two are direct competitors with different engines; Chrome is Chromium-based and developed by Google.",
        "verifiedAt": "2026-10-04T00:00:00.000Z"
      },
      {
        "target": "brave",
        "type": "alternative",
        "reason": "Both position themselves against Chrome on privacy, but Brave is Chromium-based while Firefox uses Gecko.",
        "verifiedAt": "2026-10-04T00:00:00.000Z"
      },
      {
        "target": "safari",
        "type": "alternative",
        "reason": "Both are non-Chromium browsers on macOS, but Safari uses WebKit and is bundled with the operating system.",
        "verifiedAt": "2026-10-04T00:00:00.000Z"
      }
    ],
    "sources": [
      {
        "id": "firefox:official",
        "type": "official_website",
        "url": "https://www.firefox.com/",
        "title": "Firefox — official website",
        "trustLevel": "B",
        "accessedAt": null
      },
      {
        "id": "firefox:developer",
        "type": "developer",
        "url": "https://www.mozilla.org/",
        "title": "Mozilla — developer website",
        "trustLevel": "B",
        "accessedAt": null
      },
      {
        "id": "firefox:documentation",
        "type": "documentation",
        "url": "https://support.mozilla.org/",
        "title": "Firefox — documentation",
        "trustLevel": "C",
        "accessedAt": null
      }
    ],
    "claims": [
      {
        "id": "software:firefox.isA",
        "subject": "software:firefox",
        "predicate": "isA",
        "value": "web browser",
        "status": "editorially-reviewed",
        "sourceIds": [
          "firefox:official"
        ],
        "lastVerified": null
      },
      {
        "id": "software:firefox.supportsPlatform",
        "subject": "software:firefox",
        "predicate": "supportsPlatform",
        "value": [
          "macOS"
        ],
        "status": "verified",
        "sourceIds": [
          "firefox:official"
        ],
        "lastVerified": null
      },
      {
        "id": "software:firefox.officialWebsite",
        "subject": "software:firefox",
        "predicate": "officialWebsite",
        "value": "https://www.firefox.com/",
        "status": "verified",
        "sourceIds": [
          "firefox:official"
        ],
        "lastVerified": null
      },
      {
        "id": "software:firefox.listedInCategory",
        "subject": "software:firefox",
        "predicate": "listedInCategory",
        "value": [
          "utilities"
        ],
        "status": "editorially-reviewed",
        "sourceIds": [
          "firefox:official"
        ],
        "lastVerified": null
      },
      {
        "id": "software:firefox.pricingModel",
        "subject": "software:firefox",
        "predicate": "pricingModel",
        "value": "Open source",
        "status": "developer-stated",
        "sourceIds": [
          "firefox:official"
        ],
        "lastVerified": null
      },
      {
        "id": "software:firefox.developedBy",
        "subject": "software:firefox",
        "predicate": "developedBy",
        "value": "Mozilla",
        "status": "developer-stated",
        "sourceIds": [
          "firefox:developer",
          "firefox:official"
        ],
        "lastVerified": null
      },
      {
        "id": "software:firefox.ownership",
        "subject": "software:firefox",
        "predicate": "ownership",
        "value": "Third-party product — not published by Nuanyue",
        "status": "editorially-reviewed",
        "sourceIds": [],
        "lastVerified": null
      },
      {
        "id": "software:firefox.isOpenSource",
        "subject": "software:firefox",
        "predicate": "isOpenSource",
        "value": true,
        "status": "verified",
        "sourceIds": [
          "firefox:official"
        ],
        "lastVerified": null
      },
      {
        "id": "software:firefox.licensedUnder",
        "subject": "software:firefox",
        "predicate": "licensedUnder",
        "value": "MPL-2.0",
        "status": "verified",
        "sourceIds": [
          "firefox:documentation",
          "firefox:official"
        ],
        "lastVerified": null
      },
      {
        "id": "software:firefox.currentVersion",
        "subject": "software:firefox",
        "predicate": "currentVersion",
        "value": "157.0",
        "status": "developer-stated",
        "sourceIds": [
          "firefox:official"
        ],
        "lastVerified": null
      },
      {
        "id": "software:firefox.hasFeature",
        "subject": "software:firefox",
        "predicate": "hasFeature",
        "value": [
          "Gecko rendering engine, independent of Chromium",
          "Extension ecosystem",
          "Private browsing mode",
          "Cross-device sync of bookmarks, history and tabs",
          "Built-in PDF viewer",
          "Tracking protection"
        ],
        "status": "editorially-reviewed",
        "sourceIds": [
          "firefox:official"
        ],
        "lastVerified": null
      },
      {
        "id": "software:firefox.usedFor",
        "subject": "software:firefox",
        "predicate": "usedFor",
        "value": [
          "Browsing the web in a browser that does not use Chromium",
          "Testing a site against a non-Chromium engine",
          "Browsing privately with private browsing and tracking protection",
          "Syncing bookmarks, history and tabs across devices",
          "Reading PDFs in the browser's built-in viewer"
        ],
        "status": "editorially-reviewed",
        "sourceIds": [
          "firefox:official"
        ],
        "lastVerified": null
      },
      {
        "id": "software:firefox.audienceFor",
        "subject": "software:firefox",
        "predicate": "audienceFor",
        "value": [
          "Anyone who wants browser diversity rather than a second Chromium",
          "Web developers who need to test against a non-Chromium engine",
          "Users on macOS 10.14 or below — Mozilla maintains Firefox ESR for them"
        ],
        "status": "editorially-reviewed",
        "sourceIds": [
          "firefox:official"
        ],
        "lastVerified": null
      },
      {
        "id": "software:firefox.audienceNotFor",
        "subject": "software:firefox",
        "predicate": "audienceNotFor",
        "value": [
          "Anyone who needs a Chromium-only extension — a small number of extensions exist only for Chromium",
          "Users who need a browser that renders identically to Chrome — sites tested only against Chrome occasionally behave differently"
        ],
        "status": "editorially-reviewed",
        "sourceIds": [
          "firefox:official"
        ],
        "lastVerified": null
      },
      {
        "id": "software:firefox.limitation",
        "subject": "software:firefox",
        "predicate": "limitation",
        "value": [
          "The current release requires macOS 10.15; macOS 10.14 and below must use Firefox ESR",
          "A small number of extensions are Chromium-only, and sites tested exclusively against Chrome occasionally render differently",
          "Apple Silicon support is not stated in the sources Nuanyue tracks"
        ],
        "status": "editorially-reviewed",
        "sourceIds": [],
        "lastVerified": null
      },
      {
        "id": "software:firefox.advantage.0",
        "subject": "software:firefox",
        "predicate": "advantage",
        "value": "Runs on Gecko rather than Chromium, so it is the mainstream browser that does not share Chrome's rendering engine.",
        "status": "verified",
        "sourceIds": [
          "firefox:official"
        ],
        "lastVerified": "2026-10-04"
      },
      {
        "id": "software:firefox.advantage.1",
        "subject": "software:firefox",
        "predicate": "advantage",
        "value": "Free and open source under the Mozilla Public License 2.0.",
        "status": "verified",
        "sourceIds": [
          "firefox:official"
        ],
        "lastVerified": "2026-10-04"
      },
      {
        "id": "software:firefox.advantage.2",
        "subject": "software:firefox",
        "predicate": "advantage",
        "value": "Mozilla maintains an Extended Support Release for users on older macOS versions that no longer receive the current build.",
        "status": "developer-stated",
        "sourceIds": [
          "firefox:official"
        ],
        "lastVerified": "2026-10-04"
      },
      {
        "id": "software:firefox.drawback.0",
        "subject": "software:firefox",
        "predicate": "drawback",
        "value": "Mozilla no longer supports the current release on macOS 10.14 and below, so those users must switch to Firefox ESR.",
        "status": "verified",
        "sourceIds": [
          "firefox:official"
        ],
        "lastVerified": "2026-10-04"
      },
      {
        "id": "software:firefox.drawback.1",
        "subject": "software:firefox",
        "predicate": "drawback",
        "value": "Because it is not Chromium-based, sites tested only against Chrome occasionally behave differently, and a small number of extensions exist only for Chromium.",
        "status": "editorially-reviewed",
        "sourceIds": [],
        "lastVerified": "2026-10-04"
      }
    ],
    "lastUpdated": "2026-10-04T00:00:00.000Z",
    "lastReviewedAt": null
  }
}