Auth0 vs Proton Drive

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 Drive is the encrypted cloud storage service from Proton AG, the Geneva company founded in 2014 by scientists who met at CERN and best known for Proton Mail. Files, file names, folders and photos are end-to-end encrypted on your device before upload, so Proton cannot read them, and the code of its apps is open source and independently audited.

Drive works on the web, Windows, macOS, iOS and Android, with automatic photo backup, desktop sync, password-protected and expiring share links, and long version history. It now includes Proton Docs and Proton Sheets for encrypted collaborative documents and spreadsheets. The free plan offers up to 5 GB; Drive Plus adds 200 GB, while Proton Unlimited, Duo and Family bundle Drive with Mail, VPN, Pass and Calendar. Business teams use Drive Professional with 1 TB per user.

Proton Drive suits privacy-conscious individuals, journalists and small teams who want Google Drive convenience without handing data to an ad company. Tresorit is the stronger business-focused encrypted option, Google Drive and Dropbox win on third-party integrations and real-time office editing, and Sync.com is a cheaper encrypted alternative for large storage.

In 2026 Proton shipped a Drive CLI for Windows, macOS and Linux and faster encryption, but a native Linux sync client is still on the roadmap. If you already pay for Proton Mail, check Proton Unlimited first, because it often costs less than separate subscriptions.