The best Authenticator alternative to PassQuantum is Bitwarden, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 10 alternatives to PassQuantum and ten of them are Authenticators so hopefully you can find a suitable replacement. Other interesting Authenticator alternatives to PassQuantum are KeePassXC, KeePass, Proton Pass and LastPass.
Manage unique passwords and sensitive information with platform support for Mac, Windows, iOS, Android, and more. Features include auto-fill, security alerts, and cross-device synchronization.
Open-source password manager using AES-256 and PBKDF2 SHA-256 encryption. Securely store and sync logins across iOS, Android, Windows, and more without service provider access.
Open-source password manager providing offline storage for passwords, notes, and attachments with AES-256 encryption, cross-platform compatibility, browser add-ons, TOTP support, compatibility with KeePass databases, a strong password generator, and no ads or trackers.
Free and open source password manager offering secure local storage of passwords in an encrypted database, strong AES and Twofish encryption, master key or key file access, portable version, plugin support, password generation, and optional two-factor authentication.
End-to-end encrypted password management and identity protection. Developed by CERN scientists as part of Proton’s services, ensuring peace of mind for millions with open-source, battle-tested encryption. Supports two-factor authentication, synced across devices.
Password manager with unlimited storage, password generation, form filling, secure sharing, dark web monitoring, account recovery, and business tools like dashboards.
End-to-end encrypted solution for managing passwords, generating alternative aliases and email addresses, encrypting data locally, and providing both built-in email and alias generation. Offers optional cloud or self-hosting, is open-source, and helps prevent online tracking.
Manage unique passwords and sensitive information with platform support for Mac, Windows, iOS, Android, and more. Features include auto-fill, security alerts, and cross-device synchronization.
KeePassDX is a material design KeePass client for managing keys and passwords in an encrypted database for your Android device.
Bitwarden Authenticator generates verification codes for two-factor authentication, ensuring your identity is verified when you log into accounts.
Lightweight, self-hosted server written in Rust, fully compatible with Bitwarden clients, implements the Bitwarden server API, supports organizations, attachments, web interface, website icon API, YubiKey, Duo, and multiple two-factor authentication options.
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