{
  "slug": "mumble",
  "category": "voip-clients",
  "name": "Mumble",
  "description": "Open source, low-latency voice chat client and server (Murmur) for groups, with encrypted connections and self-hosted servers.",
  "website": "https://www.mumble.info",
  "source": "https://github.com/mumble-voip/mumble",
  "license": null,
  "platforms": [],
  "jurisdiction": null,
  "pick": false,
  "pick_reason": null,
  "disclosure": null,
  "grade": "C",
  "score": 65,
  "coverage": 100,
  "summary": "Mumble scores 65 out of 100 (grade C) on the voice calls criteria. It meets 2 of 4 criteria: open source and no ads or data sales. It partly meets no trackers or telemetry. It does not meet independent audit.",
  "url": "https://privacyratings.com/voip-clients/mumble/",
  "markdown": "https://privacyratings.com/voip-clients/mumble/index.md",
  "answers": {
    "open_source": {
      "title": "Open source",
      "weight": 3,
      "answer": "yes",
      "evidence": "https://github.com/mumble-voip/mumble/blob/master/LICENSE",
      "note": "BSD-3-Clause."
    },
    "no_trackers": {
      "title": "No trackers or telemetry",
      "weight": 3,
      "answer": "partial",
      "evidence": "https://github.com/mumble-voip/mumble/blob/master/src/mumble/Usage.cpp",
      "note": "No third-party trackers; the client sends first-party usage statistics, which are on by default and can be turned off."
    },
    "no_ads": {
      "title": "No ads or data sales",
      "weight": 2,
      "answer": "yes",
      "evidence": "https://www.mumble.info/about/",
      "note": "Volunteer-run open source project with no ads or data sales."
    },
    "independent_audit": {
      "title": "Independent audit",
      "weight": 2,
      "answer": "no",
      "evidence": null,
      "note": "No independent audit is published."
    },
    "transparency_report": {
      "title": "Transparency report",
      "weight": 2,
      "answer": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    },
    "user_notice": {
      "title": "Tells users about requests",
      "weight": 1,
      "answer": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    },
    "tls": {
      "title": "TLS configuration",
      "weight": 2,
      "answer": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    },
    "security_headers": {
      "title": "Security headers",
      "weight": 1,
      "answer": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    },
    "web_standards": {
      "title": "Modern web standards",
      "weight": 1,
      "answer": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    }
  },
  "tests": {
    "ssllabs": null,
    "observatory": null,
    "internetnl_web": null,
    "internetnl_mail": null,
    "trackers": [],
    "tested_at": "2026-10-01T07:00:49.991Z"
  },
  "last_modified": "2026-10-01T07:44:20Z"
}