Best Open Source authentication Libraries
A curated list of the most popular GitHub repositories tagged with authentication. Select any project to visualize its architecture and dive into the codebase using RepoMind's AI engine.
#1pocketbase/pocketbase
Open Source realtime backend in 1 file
#2nextauthjs/next-auth
Authentication for the Web.
#3better-auth/better-auth
The most comprehensive authentication framework for TypeScript
#4authelia/authelia
The Single Sign-On Multi-Factor portal for web apps, now OpenID Certified™
#5goauthentik/authentik
The authentication glue you need.
#6apache/casbin
Apache Casbin: an authorization library that supports access control models like ACL, RBAC, ABAC.
#7mikeroyal/Self-Hosting-Guide
Self-Hosting Guide. Learn all about locally hosting (on premises & private web servers) and managing software applications by yourself or your organization. Including Cloud, LLMs, WireGuard, Automation, Home Assistant, and Networking.
#8supertokens/supertokens-core
Open source alternative to Auth0 / Firebase Auth / AWS Cognito
#9zitadel/zitadel
ZITADEL - Identity infrastructure, simplified for you.
#10apereo/cas
Apereo CAS - Identity & Single Sign On for all earthlings and beyond.
#11nhost/nhost
The Open Source Firebase Alternative with GraphQL.
#12teamhanko/hanko
Modern authentication, on your terms. Open source alternative to Auth0, Clerk, WorkOS, Stytch.
#13git-ecosystem/git-credential-manager
Secure, cross-platform Git credential storage with authentication to GitHub, Azure Repos, and other popular Git hosting services.
#14unkeyed/unkey
The Developer Platform for Modern APIs
#15dpgaspar/Flask-AppBuilder
Simple and rapid application development framework, built on top of Flask. includes detailed security, auto CRUD generation for your models, google charts and much more. Demo (login with guest/welcome) - http://flaskappbuilder.pythonanywhere.com/
#16akto-api-security/akto
Proactive, Open source API security → API discovery, API Security Posture, Testing in CI/CD, Test Library with 1000+ Tests, Add custom tests, Sensitive data exposure
#17wso2/product-is
Welcome to the WSO2 Identity Server source code! For info on working with the WSO2 Identity Server repository and contributing code, click the link below.
#18thunder-id/thunderid
ThunderID is a high-performance, open-source identity stack designed for developers to secure and manage access for humans, AI agents, and workloads through fully composable identity flows.
#19nuxt-modules/hanko
Hanko integration for Nuxt
#20wultra/powerauth-crypto
PowerAuth - Open-source solution for authentication, secure data storage and transport security in mobile banking.