1Password

1Password is the industry benchmark password manager and enterprise credential security platform, trusted by over 100,000 businesses and millions of individuals worldwide. Engineered around a zero-knowledge security architecture, 1Password encrypts passwords, credit cards, secure notes, and sensitive documents end-to-end so that not even 1Password staff can access user data.

The platform utilizes a unique two-factor encryption model combining a master password with a locally generated 128-bit Secret Key, providing mathematical protection against brute-force attacks even in worst-case database compromise scenarios. 1Password features integrated Watchtower auditing, which proactively alerts users to compromised passwords, reused credentials, and websites supporting two-factor authentication or biometric passkeys.

1Password is accessible via native desktop applications for macOS, Windows, and Linux, browser extensions for all major browsers, mobile apps for iOS and Android, and a powerful developer CLI. Following a 14-day free trial, 1Password offers affordable subscription tiers for individuals, families, teams, and enterprises.