🚀 Top 12 Open Source Auth Projects Every Developer Should Know 🔑

• OPAL

  33 2,281 8.9 Python

  Policy and data administration, distribution, and real-time updates on top of Policy Agents (OPA, Cedar, ...) (by permitio)

  

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• Keycloak

  229 19,857 10.0 Java

  Open Source Identity and Access Management For Modern Applications and Services

  

Single Sign On (SSO) - Keycloak

• SurveyJS

  surveyjs.io sponsored

  Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.

  

• SuperTokens Community

  114 11,898 9.3 Java

  Open source alternative to Auth0 / Firebase Auth / AWS Cognito

  

SuperTokens

• next-auth

  203 22,158 9.9 TypeScript

  Authentication for the Web.

  

NextAuth.js

• hanko

  11 5,409 9.5 Go

  Auth and User Management for the passkey era. An open source alternative to Auth0 and Clerk.

  

Hanko.io

• supabase

  767 65,869 10.0 TypeScript

  The open source Firebase alternative.

  

Supabase

• openfga

  15 2,244 9.7 Go

  A high performance and flexible authorization/permission engine built for developers and inspired by Google Zanzibar

  

OpenFGA

• WorkOS

  workos.com sponsored

  The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

  

• jose

  6 4,772 9.1 TypeScript

  JWA, JWS, JWE, JWT, JWK, JWKS for Node.js, Browser, Cloudflare Workers, Deno, Bun, and other Web-interoperable runtimes.

JWT - jose

• Ory Hydra

  37 15,068 9.1 Go

  OpenID Certified™ OpenID Connect and OAuth Provider written in Go - cloud native, security-first, open source API security for your infrastructure. SDKs for any language. Works with Hardware Security Modules. Compatible with MITREid.

  

OAuth Server - Hydra

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