Authentication

285+ open-source auth tools — OAuth, SSO, passkeys, MFA, and session management. Alternatives to Auth0, Clerk, and Firebase Auth.

Supertokens Core

Open source alternative to Auth0 / Firebase Auth / AWS Cognito

Authentication
auth0authenticationaws-cognito
Visit → 14979★ 17 AI recommendations
Zitadel

Open-source identity management and auth.

Authentication
authidentityopen-source
Visit → 13459★ 5 AI recommendations
Lucia Auth

Open-source auth library for any JavaScript runtime

Authentication
authopen-sourcetypescript
Visit → 10453★ 18 AI recommendations
Hanko

Passkey-first authentication. Open source.

Authentication
authpasskeysopen-source
Visit → 8892★ 40 AI recommendations
Saas Boilerplate

🚀🎉📚 SaaS Boilerplate built with Next.js + Tailwind CSS + Shadcn UI + TypeScript. ⚡️ Full-stack React

Authentication
authenticationboilerplatemulti-tenancy
Visit → 6927★ 9 AI recommendations
voidauth

Single Sign-On for Your Self-Hosted Universe

Authentication
open-sourceself-hostedtypescript
Visit → 1931★ 1 AI recommendations
Password-Manager

Self-hosted Password Manager based on Laravel 10 + PHP 8 + MySQL 8. Gestor de Contraseñas basado en

Authentication
open-sourcephpself-hosted
Visit → 330★ 11 AI recommendations
keyper

🔐 A self-hosted credential manager with zero-knowledge encryption, multi-user support, and emergency

Authentication
apiopen-sourceself-hosted
Visit → 104★ 12 AI recommendations
zauth

2FA (Two-Factor Authentication) application for CLI terminal with support to import/export andOTP fi

Authentication
cligoopen-source
Visit → 78★ 34 AI recommendations
authgate

A lightweight OAuth 2.0 Authorization Server supporting Device Authorization Grant (RFC 8628) and Au

Authentication
golightweightopen-source
Visit → 47★ 13 AI recommendations
webdav-server

The WebDAV Server is a lightweight, customizable solution built with Docker, designed for secure fil

Authentication
dockerlightweightopen-source
Visit → 25★
Clerk

Complete user management and authentication for modern apps

Authentication
authloginuser-management
Visit → 13 AI recommendations
Compare tools: Lucia Auth vs keyper · keyper vs SSOReady · SSOReady vs Arctic