{
    "products": [
        {
            "slug": "2fas-auth",
            "name": "2FAS Auth",
            "kind": "app",
            "website": "https://2fas.com/",
            "page": "https://listme.name/software/2fas-auth",
            "tagline": "Local-first authenticator with no account and optional cloud backup",
            "summary": "2FAS Auth is a local-first two-factor authenticator from Two Factor Authentication Service, Inc. It runs on iOS and Android with a browser extension, requires no account, offers cloud or manual backup, and publishes its app source on GitHub.",
            "developer": "Two Factor Authentication Service, Inc.",
            "platforms": [
                "ios",
                "android",
                "browser-extension"
            ],
            "pricing": "open-source",
            "price_note": "Open source under GPL-3.0; no account required",
            "free_to_use": true,
            "open_source": true,
            "license": "GPL-3.0",
            "source": "https://github.com/twofas",
            "strengths": [
                "No account required",
                "Cloud or manual backup options",
                "Public repositories under GPL-3.0"
            ],
            "limits": [
                "Site uses both open-source and source-available wording",
                "Native apps cover iOS and Android only"
            ],
            "checked": "2026-10-10",
            "connected_to_publisher": false,
            "overview": "2FAS Auth stores tokens on your device and does not require an account. It offers cloud or manual backup, and you control how tokens are stored. Groups, badges, icons and labels help organize codes, and an Apple Watch app is available alongside the iOS and Android apps and the browser extension.\n\nThe company describes the project as open source and source-available. Its public repositories for the iOS and Android Auth apps are under GPL-3.0, and a Cryptography White Paper documents the algorithms and design choices. Because the site uses both terms, check the license of each repository before you rely on the claim."
        },
        {
            "slug": "yubico-authenticator",
            "name": "Yubico Authenticator",
            "kind": "app",
            "website": "https://github.com/Yubico/yubioath-flutter",
            "page": "https://listme.name/software/yubico-authenticator",
            "tagline": "Free app for managing one-time codes on a YubiKey",
            "summary": "Yubico Authenticator is an open-source companion app for YubiKey hardware keys, published by Yubico. It runs on Windows, macOS, Linux, Android and iOS and manages the one-time password accounts stored on a YubiKey.",
            "developer": "Yubico",
            "platforms": [
                "windows",
                "macos",
                "linux",
                "android",
                "ios"
            ],
            "pricing": "open-source",
            "price_note": "Free under Apache 2.0; works with a YubiKey hardware key",
            "free_to_use": true,
            "open_source": true,
            "license": "Apache-2.0",
            "source": "https://github.com/Yubico/yubioath-flutter",
            "strengths": [
                "Apache 2.0 licensed, with source on GitHub",
                "Desktop apps for Windows, macOS and Linux"
            ],
            "limits": [
                "Needs a YubiKey hardware key",
                "The iOS version is a separate app"
            ],
            "checked": "2026-10-10",
            "connected_to_publisher": false,
            "overview": "Yubico Authenticator is the companion app for YubiKey hardware keys, published by Yubico under the Apache 2.0 license. Its README describes it as a way to manage the YubiKey and access one-time passwords, with a desktop app for Windows, macOS and Linux and an Android app.\n\nThe supported systems listed in the project are Windows 10 and later, macOS 13 and later, Ubuntu 22.04 and later, and Android 13 and later. The iOS version is a separate app that the project links from its README. Because the app is built around a YubiKey, it is useful only if you own a compatible key."
        }
    ],
    "differences": [
        "Only Yubico Authenticator runs on Windows.",
        "Only Yubico Authenticator runs on macOS.",
        "Only Yubico Authenticator runs on Linux."
    ],
    "shared_rankings": [
        {
            "list": "authenticator-apps",
            "name": "Authenticator apps",
            "page": "https://listme.name/best/authenticator-apps",
            "of": 10,
            "results": [
                {
                    "product": "2fas-auth",
                    "rank": 4,
                    "score": 87.5,
                    "verdict": "Local-first, open-source authenticator with no accounts, optional cloud or manual backup and an Apple Watch app. Its site uses both open-source and source-available wording, so check each repository's license.",
                    "best_for": "Local-first codes without an account",
                    "spec": {
                        "platforms": "iOS, Android, browser extension",
                        "open_source": true,
                        "backups": "Cloud or manual backup"
                    }
                },
                {
                    "product": "yubico-authenticator",
                    "rank": 3,
                    "score": 88,
                    "verdict": "Open-source companion app for YubiKey keys, with desktop builds for Windows, macOS and Linux and an Android app. It is useful only with a YubiKey, unlike the phone apps above, and its iOS version is a separate app.",
                    "best_for": "Hardware-key users who want desktop and mobile access",
                    "spec": {
                        "platforms": "Windows, macOS, Linux, Android, iOS",
                        "open_source": true,
                        "backups": "Codes live on the YubiKey; no cloud backup described"
                    }
                }
            ]
        }
    ],
    "ranks_higher_in_closest_shared_list": "yubico-authenticator",
    "page": "https://listme.name/compare/2fas-auth-vs-yubico-authenticator",
    "json": "https://listme.name/api/v1/compare/2fas-auth-vs-yubico-authenticator.json",
    "notes": [
        "Scores are editorial and only comparable inside one list. Products with connected_to_publisher true receive a disclosed ranking lift: https://listme.name/methodology"
    ],
    "source": "https://listme.name",
    "license": "Free to read and cite with attribution to listme.name.",
    "docs": "https://listme.name/developers"
}