Authentication Open Source Tools

Alternative toApigee

Build, document, and monetize APIs from one self-hosted platform

• 2,127 GitHub stars
• Apache-2.0Licence Apache-2.0

Alternative toFirebase

Self-hosted backend with real-time API and search built in

• 1,668 GitHub stars
• Apache-2.0Licence Apache-2.0
• #BaaS

Alternative toWorkOS FGA

Run fine-grained authorization with RBAC, ABAC, and ReBAC

• 1,335 GitHub stars
• Apache-2.0Licence Apache-2.0

Alternative to1Password

Store passwords in an encrypted local database, no cloud account

• 884 GitHub stars
• Artistic-2.0Licence Artistic-2.0
• #Security

Alternative toDocuSign

Open source e-signature platform for PDF signing and forms

• 834 GitHub stars
• AGPL-3.0Licence AGPL-3.0
• #Security

Alternative toAuth0

Composable authentication for modern Go backends

• 551 GitHub stars
• MITLicence MIT

Alternative toVercel

Full-stack Vite toolkit with one-command Cloudflare deployment

• 507 GitHub stars
• MITLicence MIT

Alternative toFirebase

Full-stack framework for building production-ready web apps

• 432 GitHub stars
• Apache-2.0Licence Apache-2.0

Alternative to1Password

Self-hosted team password manager with role-based access

• 136 GitHub stars
• BSD-3-ClauseLicence BSD-3-Clause
• #Security

Alternative to1Password

Self-hosted password manager for teams with enterprise SSO

• 110 GitHub stars
• #Security