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  "@id": "https://www.nuanyue.com/software/little-snitch/#software",
  "name": "Little Snitch",
  "description": "macOS network monitor and personal application firewall that asks before any app connects out, with rule groups, profiles, blocklists and encrypted DNS.",
  "url": "https://www.nuanyue.com/software/little-snitch/",
  "mainEntityOfPage": "https://www.nuanyue.com/software/little-snitch/",
  "operatingSystem": "macOS",
  "applicationCategory": "UtilitiesApplication",
  "publisher": {
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    "url": "https://www.obdev.at/"
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  "softwareVersion": "6.5",
  "offers": {
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    "price": "59",
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    "slug": "little-snitch",
    "name": "Little Snitch",
    "type": "SoftwareApplication",
    "entityType": "firewall",
    "description": "macOS network monitor and personal application firewall that asks before any app connects out, with rule groups, profiles, blocklists and encrypted DNS.",
    "shortDescription": "Application firewall that approves or blocks every outgoing connection.",
    "answer": "Little Snitch watches what your Mac connects to and asks you before allowing it. When an application tries to reach the internet, the app shows a connection alert so you can allow or deny that connection, and the vendor's position is that no data leaves without your consent. Beyond the alert itself it records where connections go — server location, port, protocol and volume — groups them by app, domain or country, charts activity over up to twelve months, and lets you build rule groups and switch between profiles automatically when you join a network. It also encrypts DNS requests using DoH, DoT or DoQ. It is a paid, closed-source Mac application. It suits anyone who wants to know what their machine is saying and to whom.",
    "page": "https://www.nuanyue.com/software/little-snitch/",
    "dataUrl": "https://www.nuanyue.com/data/software/little-snitch.json",
    "categories": [
      "networking"
    ],
    "tags": [],
    "platform": [
      "macOS"
    ],
    "minOsVersion": "macOS 12",
    "architecture": [],
    "featured": false,
    "pricing": "one-time",
    "pricingDescription": "Sold as a licence rather than a subscription. A single licence costs $59 and permits one user across multiple computers, or multiple users on one computer. A family licence covers up to 5 computers in one household for non-commercial use, and multi licences are sold in 5x and 10x packs. Upgrades from an older major version are priced separately.",
    "price": {
      "amount": 59,
      "currency": "USD"
    },
    "currentVersion": "6.5",
    "openSource": false,
    "website": "https://www.obdev.at/products/littlesnitch/index.html",
    "documentation": "https://www.obdev.at/products/littlesnitch/faq.html",
    "appStore": "https://apps.apple.com/us/app/little-snitch-mini/id1629008763?mt=12&uo=4",
    "download": "https://www.obdev.at/downloads/littlesnitch/LittleSnitch-6.5.dmg",
    "developer": {
      "name": "Objective Development Software GmbH",
      "website": "https://www.obdev.at/"
    },
    "icon": "/apps/little-snitch.png",
    "features": [
      "Connection alerts asking whether an app may connect out",
      "Silent Mode, which allows new connections at first and defers the decision",
      "Real-time view of every connection, with server location, port and protocol",
      "Interactive traffic chart covering up to twelve months of history",
      "Hierarchical grouping of connections by app, domain or country",
      "Rule groups, held locally or subscribed from a remote server",
      "Profiles that can switch automatically when you join a network",
      "Curated blocklists, updated daily, with support for IP-based lists",
      "Built-in DNS encryption over DoH, DoT or DoQ",
      "Identifier-based rules keyed to an app's cryptographic signature rather than its path",
      "Command-line utility for changing settings, exporting rules and logging events"
    ],
    "useCases": [
      "Finding out what an unfamiliar application sends over the network",
      "Blocking an app from phoning home while leaving the rest of the machine alone",
      "Keeping DNS queries away from the local network",
      "Reviewing months of connection history to spot unusual traffic"
    ],
    "formats": [],
    "integrations": [],
    "pros": [
      {
        "text": "Shows a connection alert whenever an app wants to connect, so nothing goes out without a decision.",
        "status": "developer-stated",
        "source": "official",
        "verifiedAt": "2026-10-05T00:00:00.000Z"
      },
      {
        "text": "Records server location, port, protocol and data volume for each connection.",
        "status": "developer-stated",
        "source": "official",
        "verifiedAt": "2026-10-05T00:00:00.000Z"
      },
      {
        "text": "Provides an interactive traffic chart covering up to twelve months of history.",
        "status": "developer-stated",
        "source": "official",
        "verifiedAt": "2026-10-05T00:00:00.000Z"
      },
      {
        "text": "Encrypts DNS requests using DoH, DoT or DoQ with services such as Quad9.",
        "status": "developer-stated",
        "source": "official",
        "verifiedAt": "2026-10-05T00:00:00.000Z"
      },
      {
        "text": "Identifies processes by cryptographic code signature, so rules survive an app being moved or renamed.",
        "status": "developer-stated",
        "source": "official",
        "verifiedAt": "2026-10-05T00:00:00.000Z"
      },
      {
        "text": "Ships as a universal binary that runs on both Apple silicon and Intel Macs, from version 5 onward.",
        "status": "verified",
        "source": "documentation",
        "verifiedAt": "2026-10-05T00:00:00.000Z"
      }
    ],
    "cons": [
      {
        "text": "Costs $59 for a single licence, where some comparable Mac firewalls are free.",
        "status": "verified",
        "source": "official",
        "verifiedAt": "2026-10-05T00:00:00.000Z"
      },
      {
        "text": "Closed source, so the filtering implementation cannot be inspected.",
        "status": "verified",
        "source": "official",
        "verifiedAt": "2026-10-05T00:00:00.000Z"
      },
      {
        "text": "Version 4 does not support Apple silicon; only version 5 and later run on M-series Macs.",
        "status": "verified",
        "source": "documentation",
        "verifiedAt": "2026-10-05T00:00:00.000Z"
      },
      {
        "text": "Approving connections one by one is intrusive until rules have accumulated, which is why Silent Mode exists.",
        "status": "editorially-reviewed"
      }
    ],
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      "Mac users who want to approve every outgoing connection rather than trust each app",
      "People who need to audit which software is contacting which servers"
    ],
    "notFor": [
      "Anyone who needs an open-source firewall they can inspect — Little Snitch is closed source",
      "Users who want a free tool, since it is sold as a paid licence",
      "Windows or Linux users, as it is a Mac-only application"
    ],
    "limitations": [
      "Closed source, so the firewall implementation cannot be audited",
      "Mac-only; there is no Windows or Linux version",
      "The length of the free trial is not stated in the sources Nuanyue tracks",
      "The minimum macOS version for the current release is not stated as a single figure; the vendor publishes a compatibility table instead"
    ],
    "firstUse": {
      "installation": {
        "value": "Direct download from obdev.at; the app is not distributed through the Mac App Store.",
        "status": "verified",
        "source": "official",
        "verifiedAt": "2026-10-05T00:00:00.000Z"
      },
      "firstLaunch": {
        "value": "Requires installing a system extension so the firewall can filter connections; existing apps then begin raising connection alerts.",
        "status": "developer-stated",
        "source": "documentation",
        "verifiedAt": "2026-10-05T00:00:00.000Z"
      },
      "systemIntegration": {
        "value": "Installs a network extension and a menu bar Control Center, and can filter traffic from every process on the Mac.",
        "status": "developer-stated",
        "source": "official",
        "verifiedAt": "2026-10-05T00:00:00.000Z"
      },
      "appleSilicon": {
        "value": true,
        "status": "verified",
        "source": "documentation",
        "verifiedAt": "2026-10-05T00:00:00.000Z"
      }
    },
    "updates": [],
    "faq": [
      {
        "question": "How much does Little Snitch cost?",
        "answer": "A single licence costs $59. It permits one user across multiple computers, or multiple users on a single computer. A family licence covers up to 5 computers in one household for non-commercial use, and multi licences are sold in 5x and 10x packs.",
        "status": "verified",
        "source": "official",
        "verifiedAt": "2026-10-05T00:00:00.000Z"
      },
      {
        "question": "Does Little Snitch run on Apple silicon Macs?",
        "answer": "Yes. From version 5 onward Little Snitch is a universal binary that runs on both Apple silicon and Intel-based Macs. Version 4 does not support Apple silicon, because it relied on a kernel extension that Apple discontinued on those machines.",
        "status": "verified",
        "source": "documentation",
        "verifiedAt": "2026-10-05T00:00:00.000Z"
      },
      {
        "question": "Can I try Little Snitch before buying?",
        "answer": "The vendor offers a trial, but the length of the trial is not stated in the sources Nuanyue tracks, so it is not recorded here.",
        "status": "editorially-reviewed"
      },
      {
        "question": "Does Little Snitch block connections or just report them?",
        "answer": "It does both. It shows a connection alert so you can allow or deny each connection, and rules, rule groups and profiles determine what happens automatically thereafter. It also ships curated blocklists that can be activated in a few clicks.",
        "status": "developer-stated",
        "source": "official",
        "verifiedAt": "2026-10-05T00:00:00.000Z"
      }
    ],
    "relationships": [
      {
        "target": "lulu",
        "type": "alternative",
        "reason": "Both are personal firewalls for macOS that ask before an app connects, but LuLu is free and open source while Little Snitch is a paid, closed-source product with rule groups and long-term traffic history.",
        "verifiedAt": "2026-10-05T00:00:00.000Z"
      },
      {
        "target": "wireshark",
        "type": "complements",
        "reason": "Little Snitch decides which connections the Mac may make, and Wireshark shows in detail what those connections actually carry.",
        "verifiedAt": "2026-10-05T00:00:00.000Z"
      },
      {
        "target": "proxyman",
        "type": "complements",
        "reason": "Little Snitch reveals that an app is connecting and to where, while Proxyman lets you read the HTTP requests and responses behind that connection.",
        "verifiedAt": "2026-10-05T00:00:00.000Z"
      }
    ],
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        "id": "little-snitch:app-store",
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        "url": "https://apps.apple.com/us/app/little-snitch-mini/id1629008763?mt=12&uo=4",
        "title": "Little Snitch on the Mac App Store",
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        "id": "little-snitch:official",
        "type": "official_website",
        "url": "https://www.obdev.at/products/littlesnitch/index.html",
        "title": "Little Snitch — official website",
        "trustLevel": "B",
        "accessedAt": null
      },
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        "id": "little-snitch:developer",
        "type": "developer",
        "url": "https://www.obdev.at/",
        "title": "Objective Development Software GmbH — developer website",
        "trustLevel": "B",
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        "id": "little-snitch:documentation",
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        "url": "https://www.obdev.at/products/littlesnitch/faq.html",
        "title": "Little Snitch — documentation",
        "trustLevel": "C",
        "accessedAt": null
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  }
}