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 Congrats on the launch and audit! One thing that is keeping me from switching is the lack of CLI. When can we expect one? When a desktop app becomes available, will we be able to expect good system integration like 1Password has?

@tristan957 What do you have in mind by 'good system integration'?

We'll also share your feedback about a CLI with the team, but we don't have a timeline for this feature at the moment.

@protonmail https://developer.1password.com/docs/cli/app-integration/#turn-on-the-app-integration-and-sign-in-to-your-account is what I'm talking about. I use my password manager for storing app passwords for my email accounts for use in my terminal email client. I couldn't make the switch without the CLI.
About the 1Password app integration | 1Password Developer

With the 1Password app integration turned on, you can sign in to 1Password CLI with the accounts you've added to the 1Password desktop app. Then you can authenticate your accounts in the same way you unlock your device, like with your fingerprint, face, Apple Watch, Windows Hello PIN, or device user password.