Best alternatives to PassKey in 2026

Most password managers today are cloud-first: your encrypted vault syncs across every device via the vendor's servers, which is convenient but means a company somewhere is still a link in the chain of who can theoretically reach your data. PassKey goes the opposite direction — everything stays on one Windows machine, encrypted locally, with no server involved at all. It's the difference between a bank vault you access remotely and a safe bolted to your own floor: less convenient if you need it in two places, but nothing to breach remotely because there's nothing remote. PassKey is a free, open-source (GPL v3.0) offline-first password manager for Windows 10/11 (64-bit). It encrypts your vault with AES-256-GCM using Argon2id key derivation, and stores passwords, credit cards, identity profiles, and secure notes. It includes a password generator and strength analyzer, breach verification, browser autofill extensions for Chrome and Firefox, and import from CSV, Bitwarden, or 1Password. The project reports a stable v2.0.0 release backed by 167+ deterministic tests, and supports six languages with WCAG AA accessibility and full keyboard navigation.