Open source alternative to Auth0 / Firebase Auth / AWS Cognito
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Updated
Sep 10, 2026 - Java
Open source alternative to Auth0 / Firebase Auth / AWS Cognito
🧑🚀 Authentication and authorization infrastructure for SaaS and AI apps, built on OIDC and OAuth 2.1 with multi-tenancy, SSO, and RBAC.
Modern authentication, on your terms. Open source alternative to Auth0, Clerk, WorkOS, Stytch.
Example showing how to use NextAuth.js with Next.js
👤 Identity and Access Management knowledge for cloud platforms
Open source Auth0/Clerk/Firebase alternative. Passkeys, SSO, MFA, passwordless, biometric login. Self-hosted or cloud. Enterprise-ready for SaaS & mobile apps
Passkeys, FIDO2 and WebAuthn .NET library.
🗝 Authentication for your Rails app without the icky-ness of passwords
FIDO2 Conformant WebAuthn and Passkey backend library for golang
WebAuthn ruby server library ― Make your Ruby/Rails web server become a conformant WebAuthn Relying Party
Passwordless Auth for Django REST Framework
Webauthn / passkeys helper library to make your life easier. Client side, server side and demo included.
FIDO2(WebAuthn) server officially certified by FIDO Alliance and Relying Party examples.
Magic browser/React Native JavaScript SDK is your entry-point to integrating passwordless authentication inside your application.
Create link for authenticate in Laravel without password or get private content
A starter project for next js with authentication - Contains React 17 + Typescript + Tailwind CSS 2 + React Query 3 + GitHub Auth + LinkedIn Auth + Password-less Auth + Fauna DB + ESLint + Prettier + Husky
🐮 User account system. (Abandoned)
Devise passwordless logins using emailed magic links
ASP.NET Core (.NET 9) Identity with FIDO2 WebAuthn MFA and passwordless passkeys
A ranked list of awesome Digital Identity open source projects
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