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

1. OPAL

   1 37 5,283 8.9 Python

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

   

   If you find this post helpful,please give OPAL a star on GitHub! Your support helps us make access control easier and motivates us to write more articles like this one.

2. SurveyJS

   surveyjs.io featured

   JavaScript Form Builder with No-Code UI & Built-In JSON Schema Editor. Add the SurveyJS white-label form builder to your JavaScript app (React/Angular/Vue3). Build complex JSON forms without coding. Fully customizable, works with any backend, perfect for data-heavy apps. Learn more.

   

3. Keycloak

   2 266 27,198 10.0 Java

   Open Source Identity and Access Management For Modern Applications and Services

   

   Single Sign On (SSO) - Keycloak

4. SuperTokens Community

   3 127 14,124 9.5 Java

   Open source alternative to Auth0 / Firebase Auth / AWS Cognito

   

   SuperTokens

5. next-auth

   4 219 26,751 9.8 TypeScript

   Authentication for the Web.

   

   NextAuth.js

6. hanko

   5 13 8,040 9.3 Go

   The Complete Authentication and User Management Solution for the Passkey Era. Open Source Alternative to Clerk, Auth0, et al.

   

   Hanko.io

7. supabase

   6 884 82,773 10.0 TypeScript

   The open source Firebase alternative. Supabase gives you a dedicated Postgres database to build your web, mobile, and AI applications.

   

   Supabase

8. openfga

   7 18 3,604 9.7 Go

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

   

   OpenFGA

9. InfluxDB

   www.influxdata.com featured

   InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.

   

10. jose

    8 7 6,459 9.4 TypeScript

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

    

    JWT - jose

11. Ory Hydra

    9 38 16,170 9.4 Go

    The only web-scale, fully customizable OpenID Certified™ OpenID Connect and OAuth2 Provider in the world. Become an OpenID Connect and OAuth2 Provider over night. Written in Go, cloud native, headless, API-first. Available as a service on Ory Network and for self-hosters. Relied upon by OpenAI and others for web-scale security.

    

    OAuth Server - Hydra

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