Bitwarden

Bitwarden delivers enterprise-grade security for free, with audited open-source code that surpasses even paid alternatives in transparency and trust. It supports unlimited device sync for all users—a feature locked behind a $3/month paywall by top rival LastPass. Independent audits confirm its zero-knowledge encryption, and the platform spans 15+ browser extensions and mobile apps. For password sharing, the free tier includes two-person sharing, which is 100% more generous than LastPass's free offering, which limits sharing to one user. Bitwarden also handles over 1 million active users with zero data breaches, a reliability record that outperforms #10 Inkscape's security posture. This combination of audited code, unlimited sync, and verified encryption makes Bitwarden the most secure free password manager available.