{
    "product": {
        "slug": "proton-authenticator",
        "name": "Proton Authenticator",
        "kind": "app",
        "website": "https://proton.me/authenticator",
        "page": "https://listme.name/software/proton-authenticator",
        "tagline": "Open-source two-factor app with end-to-end encrypted sync",
        "summary": "Proton Authenticator is a two-factor authentication app from Proton, the company behind Proton Mail. It runs on iPhone, iPad, Apple Watch, Android, macOS, Windows and Linux, and it syncs and backs up codes with end-to-end encryption.",
        "developer": "Proton",
        "platforms": [
            "ios",
            "android",
            "macos",
            "windows",
            "linux"
        ],
        "pricing": "free",
        "price_note": "Free to use and ad-free, according to its site",
        "free_to_use": true,
        "open_source": true,
        "strengths": [
            "Free to use, with sync and backup of codes",
            "Apps for phones, tablets, Apple Watch and desktops",
            "Standalone app, with no password manager needed"
        ],
        "limits": [
            "No browser extension is listed on the product page"
        ],
        "checked": "2026-10-10",
        "connected_to_publisher": false,
        "overview": "Proton Authenticator generates one-time codes on phones, tablets, Apple Watch and desktops. The app supports biometric unlock, and you can search for codes and see the next code for an account. Codes sync and back up across devices, and the site describes the app as end-to-end encrypted.\n\nProton describes the app as open source, free to use and ad-free, and it says the company is Swiss-based. It is a standalone product, although the site also promotes Proton Pass for storing passwords alongside codes. No browser extension is listed on the product page.",
        "highlights": [
            "End-to-end encrypted sync and backup",
            "Biometric unlock",
            "Apple Watch app",
            "Desktop apps for macOS, Windows and Linux",
            "Standalone, no password manager needed"
        ],
        "json": "https://listme.name/api/v1/products/proton-authenticator.json"
    },
    "rankings": [
        {
            "list": "authenticator-apps",
            "name": "Authenticator apps",
            "page": "https://listme.name/best/authenticator-apps",
            "rank": 2,
            "of": 10,
            "score": 89,
            "verdict": "Open-source app with end-to-end encrypted sync and backup across phones, tablets and desktops, plus an Apple Watch app. No browser extension is listed, and the company is Swiss-based.",
            "best_for": "Encrypted sync across phones, tablets and desktops"
        }
    ],
    "alternatives": [
        {
            "slug": "ente-auth",
            "name": "Ente Auth",
            "score": 91.5,
            "page": "https://listme.name/software/ente-auth"
        },
        {
            "slug": "yubico-authenticator",
            "name": "Yubico Authenticator",
            "score": 88,
            "page": "https://listme.name/software/yubico-authenticator"
        },
        {
            "slug": "2fas-auth",
            "name": "2FAS Auth",
            "score": 87.5,
            "page": "https://listme.name/software/2fas-auth"
        },
        {
            "slug": "aegis-authenticator",
            "name": "Aegis Authenticator",
            "score": 86,
            "page": "https://listme.name/software/aegis-authenticator"
        },
        {
            "slug": "stratum",
            "name": "Stratum",
            "score": 85,
            "page": "https://listme.name/software/stratum"
        },
        {
            "slug": "bitwarden-authenticator",
            "name": "Bitwarden Authenticator",
            "score": 84.5,
            "page": "https://listme.name/software/bitwarden-authenticator"
        },
        {
            "slug": "2fauth",
            "name": "2FAuth",
            "score": 82,
            "page": "https://listme.name/software/2fauth"
        },
        {
            "slug": "authy",
            "name": "Authy",
            "score": 80,
            "page": "https://listme.name/software/authy"
        },
        {
            "slug": "freeotp",
            "name": "FreeOTP",
            "score": 77,
            "page": "https://listme.name/software/freeotp"
        }
    ],
    "links": {
        "page": "https://listme.name/software/proton-authenticator",
        "markdown": "https://listme.name/software/proton-authenticator.md",
        "badge": "https://listme.name/badge/proton-authenticator.svg",
        "alternatives_page": "https://listme.name/alternatives/proton-authenticator",
        "alternatives_json": "https://listme.name/api/v1/alternatives/proton-authenticator.json"
    },
    "source": "https://listme.name",
    "license": "Free to read and cite with attribution to listme.name.",
    "docs": "https://listme.name/developers"
}