Authentication for the Web.

Auth.js is a complete open-source authentication solution for web applications.

• Auth.js @ GitHub.
• NextAuth.js.
• Secure Next.js Applications with Role-Based Authentication Using NextAuth @ freeCodeCamp.

Minimal forward authentication service that provides Google/OpenID oauth based login and authentication for the traefik reverse proxy.

A minimal forward authentication service that provides OAuth/SSO login and authentication for the traefik reverse proxy/load balancer.

Keycloak is an Open Source Identity and Access Management solution for modern Applications and Services.

Lucia is a simple yet flexible user and session management library that provides an abstraction layer between your app and your database. It's bare-bones by design, keeping everything easy to use and understand, and ensures type-safetly so you can use it confidently.

Open Source Identity and Access Management.
Add authentication to applications and secure services with minimum effort.
No need to deal with storing users or authenticating users.
Keycloak provides user federation, strong authentication, user management, fine-grained authorization, and more.

Making authentication simple.

authentik is an open-source Identity Provider focused on flexibility and versatility

A client-side Javascript SDK for authenticating with OAuth2 (and OAuth1 with a oauth proxy) web services and querying their REST API's. HelloJS standardizes paths and responses to common API's like Google Data Services, Facebook Graph and Windows Live Connect. Its modular so that list is growing. No more spaghetti code!

Multi-provider authentication framework for PHP