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Open Passkey Authenticator vs Keyguard: catalog facts
Open Passkey Authenticator	Keyguard
Free Free and open source under the EUPL-1.2.	Freemium Free to use; some features marked in the feature list require a paid subscription.
Android	Android
Stores passkeys on the device through Android Credential Manager Works with FIDO hardware keys over NFC and USB	Works with Bitwarden accounts and KeePass files Watchtower checks for leaked and reused passwords
Requires Android 13 or later Small project with few contributors	Source is published under a custom licence rather than an OSI licence Some features require a paid subscription
Downloadable app	Downloadable app
Open source	Closed source
License: EUPL-1.2	License: Custom (source available)
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.