Bitwarden

US-based but fully open-source password manager offering end-to-end encrypted storage for passwords, passkeys, credit cards, and sensitive notes across every platform. With a generous free tier, self-hosting support, and full third-party security audits, Bitwarden is the leading transparent alternative to proprietary password vaults. Note: Bitwarden is headquartered in the US but included here for its open-source nature and self-hosting capability.