285+ open-source auth tools — OAuth, SSO, passkeys, MFA, and session management. Alternatives to Auth0, Clerk, and Firebase Auth.
Your data, your control. Fully open source, authentication and authorization. No lock-ins. Deployme
OAuth 2.0 clients for popular providers — lightweight TypeScript
Authentication & payments on the web
A modern auth and user management starter template, built for the Next.js App Router and powered by
Connectivity, auth, access control, and audit platform
:boom: Customizable Angular UI Library based on Eva Design System :new_moon_with_face::sparkles:Dark
The tiniest authentication and authorization server you have ever seen.
Build product integrations with AI.
Example showing how to use NextAuth.js with Next.js
Open-source password manager with end-to-end encryption for passwords, credit cards, notes, and documents. Cross-platform sync with secure sharing capabilities.
ALTCHA offers cutting-edge spam and abuse protection for websites and apps, with privacy-friendly CAPTCHA alternatives designed for GDPR compliance.
Open source Auth0/Clerk/Firebase alternative. Passkeys, SSO, MFA, passwordless, biometric login. Sel