Most people reuse the same handful of passwords across dozens of accounts. If even one of those services gets breached, attackers can try your password on every other site you use — a technique called credential stuffing. A password manager solves this by generating, storing, and auto-filling strong, unique passwords for every account.
Proton Pass is an open-source, end-to-end encrypted password manager built by the team behind Proton Mail and Proton VPN. It goes beyond storing passwords — it also protects your identity with email aliases, built-in 2FA, and a zero-knowledge architecture that means even Proton cannot see your data.
What Is a Password Manager?
A password manager is a secure digital vault that stores all your login credentials in one place. Instead of remembering dozens of passwords, you remember one master password — and the manager handles the rest.
It generates strong, random passwords for every account, auto-fills them when you log in, and syncs across all your devices. This eliminates the two biggest security mistakes people make: reusing passwords and choosing weak ones.
- One Master Password — Remember a single strong password. The manager encrypts everything else behind it.
- Auto-Generated Passwords — Create unique, complex passwords for every site — no more "password123" or your dog's name.
- Autofill & Sync — Automatically fill login forms across your phone, laptop, and browser — no copy-pasting.
- Secure Notes & Cards — Store credit cards, secure notes, and other sensitive information alongside your passwords.
How Does Proton Pass Work?
Here's a simplified look at what happens behind the scenes when you use Proton Pass:
- You create a master password. This is the only password you need to remember. It's used to derive your encryption keys locally on your device.
- Encryption keys are generated locally. Proton Pass uses bcrypt and SRP (Secure Remote Password) to derive your keys. Your master password never leaves your device.
- Your vault is encrypted before upload. Every item — login, note, alias, credit card — is encrypted with your keys before being sent to Proton's servers.
- Sync across devices. Your encrypted vault syncs across all your devices. Each device decrypts locally using your master password.
- Autofill in your browser or app. When you visit a login page, Proton Pass detects the site and offers to fill your credentials — securely and instantly.
Why Is Proton Pass Considered Secure?
Not all password managers are created equal. Here's what sets Proton Pass apart from most competitors:
- End-to-End Encryption — Everything in your vault — passwords, notes, email aliases — is encrypted on your device before it ever reaches Proton's servers. Proton never sees your data in plaintext.
- Zero-Knowledge Architecture — Proton cannot read, access, or hand over your vault contents — even if compelled by a court order. They simply don't have the keys.
- Open Source & Audited — The entire Proton Pass codebase is open source on GitHub. Independent security firms have audited the code, and anyone can inspect it for vulnerabilities.
- Swiss Jurisdiction — Proton is headquartered in Switzerland, which has some of the strongest privacy laws in the world and is outside the Five Eyes / Fourteen Eyes surveillance alliances.
- Built-in 2FA Authenticator — Proton Pass includes an integrated TOTP authenticator, so you don't need a separate 2FA app. Your 2FA codes are encrypted along with your passwords.
- Email Alias Protection — Generate unique email aliases for each account. If a service gets breached, your real email address stays hidden and spam-free.
Key Features at a Glance
- Unlimited Passwords — Store unlimited passwords across unlimited devices with autofill and sync.
- Passkey Support — Proton Pass supports passkeys, the modern replacement for passwords backed by the FIDO Alliance.
- Secure Password Sharing — Share individual logins or entire vaults with family or team members — all end-to-end encrypted.
- Password Health Monitor — Identifies weak, reused, or compromised passwords and prompts you to update them.
- Dark Web Monitoring — Proton Pass Plus scans the dark web for your email addresses and alerts you if they appear in known breaches.
- Integrated 2FA — Store TOTP 2FA codes alongside your passwords so everything auto-fills in one step.
- Hide-My-Email Aliases — Generate unique email aliases for signups. Disable or delete them anytime to stop spam.
- Import from Other Managers — Easily import your existing passwords from 1Password, LastPass, Bitwarden, Chrome, and more.
Supported Operating Systems
Proton Pass is available as a native app on every major platform:
| Platform | Notes |
|---|---|
| Windows | Desktop app |
| macOS | Desktop app |
| Linux | Debian & RPM packages |
| Android | Google Play & APK |
| iOS / iPadOS | App Store |
Browser Extensions
Proton Pass offers browser extensions for all major browsers, enabling autofill and vault access directly from your browser toolbar:
- Chrome — Chrome Web Store
- Firefox — Firefox Add-ons
- Edge — Chromium-based
- Brave — Chromium-based
- Safari — macOS & iOS
TL;DR
- ✅ A password manager generates and stores unique, strong passwords for every account.
- ✅ Proton Pass uses end-to-end encryption and zero-knowledge architecture — even Proton can't see your data.
- ✅ It's open source, independently audited, and based in Switzerland.
- ✅ Available on Windows, macOS, Linux, Android, iOS, and all major browsers.
- ⛔ If you forget your master password and recovery phrase, your vault is gone forever — that's the trade-off for true zero-knowledge security.
Try Proton Pass
Proton Pass — end-to-end encrypted password manager with 2FA, email aliases, and dark web monitoring. From the Proton Mail team.
Affiliate Disclosure: This page contains affiliate links. If you sign up through our links, we may earn a commission at no extra cost to you. See Terms of Service.