Osmium
Privacy-first offline TOTP/HOTP authenticator
Osmium is a privacy-first, fully offline authenticator for two-factor codes (TOTP/HOTP): codes are generated on-device and work without any network connection.
• Codes are computed entirely on-device — no account, no sign-up, and no telemetry.
• No connections at start-up. Osmium goes online only when you ask it to: the automatic update check is off by default, and the Terms of Use / Privacy Policy are downloaded from osmium.im only when you open them.
• Secrets are encrypted with a non-exportable key in the Android Keystore before they are written to disk.
• TOTP and HOTP: 6/7/8 digits, SHA-1/SHA-256/SHA-512; Steam Guard codes supported.
• Organize accounts with tags and search.
• Import from other apps: Google Authenticator (QR migration), Aegis, 2FAS and other common backup formats.
• Encrypted export & restore to a local file or your own WebDAV server; encrypted quick transfer between two devices on the same Wi-Fi.
• Modern Material 3 design with light/dark themes and Material You colours.
• Fully open source (GPL-3.0-or-later); release builds are reproducible — anyone can verify that the published APK matches the source code.
No ads, no trackers, no analytics.
Website: https://osmium.im
Source code: https://github.com/lihongxi-g/osmium-authenticator
• Codes are computed entirely on-device — no account, no sign-up, and no telemetry.
• No connections at start-up. Osmium goes online only when you ask it to: the automatic update check is off by default, and the Terms of Use / Privacy Policy are downloaded from osmium.im only when you open them.
• Secrets are encrypted with a non-exportable key in the Android Keystore before they are written to disk.
• TOTP and HOTP: 6/7/8 digits, SHA-1/SHA-256/SHA-512; Steam Guard codes supported.
• Organize accounts with tags and search.
• Import from other apps: Google Authenticator (QR migration), Aegis, 2FAS and other common backup formats.
• Encrypted export & restore to a local file or your own WebDAV server; encrypted quick transfer between two devices on the same Wi-Fi.
• Modern Material 3 design with light/dark themes and Material You colours.
• Fully open source (GPL-3.0-or-later); release builds are reproducible — anyone can verify that the published APK matches the source code.
No ads, no trackers, no analytics.
Website: https://osmium.im
Source code: https://github.com/lihongxi-g/osmium-authenticator
捐助
版本
雖然在下方可選擇下載 APK 檔案，但要留意這樣的安裝方式將不會收到更新通知，是一種較不安全的下載方法。建議您先安裝 F-Droid 用戶端使用。
下載 F-Droid-
x86_64此版本需要 Android 8.0 或更高的版本。
此套件包由原開發者建置和簽署，並保證與此原始碼 Tarball 保持一致。
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arm64-v8a此版本需要 Android 8.0 或更高的版本。
此套件包由原開發者建置和簽署，並保證與此原始碼 Tarball 保持一致。
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armeabi-v7a此版本需要 Android 8.0 或更高的版本。
此套件包由原開發者建置和簽署，並保證與此原始碼 Tarball 保持一致。