Proton Pass is #opensource and has now passed an independent #security audit: https://proton.me/blog/pass-open-source-security-audit.

All fields and metadata in Pass are secured by #e2e encryption, so you can rest assured that no one, not even Proton, can access your information.

Proton Pass is open source and audited for security | Proton

Proton Pass’s code has been made open source and passed an audit carried out by the security experts at Cure53.

Proton
@protonmail do you have any plan to come up with a desktop app like bitwarden?
@tasinone Hi! Yes, desktop apps are planned for this year. However, we cannot share a specific date at this time.