Best Open-Source Two-Factor Authentication | open-source.storeAll categoriesTwo-Factor Authentication
MFA, TOTP authentication tokens, and user access verification keys.
6 tools found 
Ente Auth
Open-source, end-to-end encrypted 2FA authenticator replacing Authy with multi-device sync, audited cryptography, and cross-platform desktop clients.
AGPL-3.0Two-Factor Authentication
Aegis Authenticator
Aegis Authenticator is an open-source Android 2FA app that replaces Authy with encrypted local vaults, biometric unlock, and offline backup control.
GPL-3.0Two-Factor Authentication
PrivacyIdea
PrivacyIdea is an open-source, self-hosted multi-factor authentication server that replaces Duo Security with full control over token seeds and user data.
AGPL-3.0Two-Factor Authentication
FreeOTP
FreeOTP is an open-source 2FA client replacing Google Authenticator with offline TOTP and HOTP code generation, zero cloud sync, and no user tracking.
Apache-2.0Two-Factor Authentication
Clockode
Clockode is an offline Linux TOTP authenticator in Rust that replaces Authy with local KeePass encryption and standard Aegis backup compatibility.
GPL-3.0Two-Factor Authentication
Authenticator
Open-source Linux 2FA app replacing Authy's discontinued desktop client with local encrypted vaults, GNOME Shell search, and on-screen QR scanning.
Linux
GPL-3.0Two-Factor Authentication
Lint, codegen, breaking-change checks and dependency management in one Git-native CLI. Open source, no registry lock-in.
lintgeneratebreakingeasyp.lock
GPL-3.0Two-Factor Authentication
1d ago
AGPL-3.0Two-Factor Authentication
today
Apache-2.0Two-Factor Authentication
EasyPPromoted