Auth0 vs Proton Pass

Auth0 is a customer identity and access management (CIAM) platform that developers use to add login, sign-up and authorization to their applications. Founded in 2013, it was acquired by Okta in 2021 and now operates as Okta's customer identity product, alongside Okta's workforce identity business. Its job is to handle authentication so product teams do not build password storage, MFA and SSO themselves.

The platform centers on Universal Login, a hosted login page that supports social providers, enterprise connections (SAML, OIDC, Active Directory), passwordless email and SMS, passkeys and multi-factor authentication. Organizations support B2B multi-tenancy where each customer brings its own identity provider, Actions let teams run custom code in login and registration flows, and Fine-Grained Authorization handles relationship-based permissions. Attack protection covers bot detection, breached password checks and brute-force limits. The free plan was expanded in 2024 to 25,000 monthly active users; paid tiers are priced by MAU and features, and enterprise connections push buyers into higher plans quickly.

Auth0 fits B2B SaaS companies selling to enterprises that demand SSO, and consumer apps with large user bases and compliance requirements. It is less attractive for small teams that want drop-in UI components and predictable pricing: Clerk is simpler for React and Next.js apps, while Keycloak and Better Auth give full ownership without per-user fees.

Proton Pass is an open-source, end-to-end encrypted password manager made by Proton, the Geneva-based company behind Proton Mail, Proton VPN and Proton Drive. Launched in 2023, it applies Proton's privacy-first approach to credentials: data is encrypted on your device, the code is open source and independently audited, and the company operates under Swiss privacy law.

Pass stores passwords, passkeys, credit cards, secure notes and identity details, with apps for iOS, Android, Windows, macOS, Linux and browser extensions for autofill. Its standout feature is hide-my-email aliases, inherited from Proton's 2022 acquisition of SimpleLogin: when you sign up for a website, Pass can create a unique email alias that forwards to your real inbox, so leaks and spam can be cut off per service. Paid plans add unlimited aliases, a built-in two-factor authenticator, vault sharing and monitoring for weak or breached passwords, and Proton Pass for Business adds team vaults, policies and admin controls. The free plan is generous, with unlimited logins and devices and a limited number of aliases, and Pass is also included in Proton's bundles such as Proton Unlimited.

Proton Pass suits privacy-conscious individuals, existing Proton users and small teams who want encryption and email privacy in one tool. It is younger than its rivals, so enterprise integrations, SSO provisioning and some autofill edge cases are less mature. Bitwarden is the open-source alternative with the longest track record and self-hosting, 1Password leads for polished team and enterprise features.