Authentication & identity
Integrate sign-in, sessions, organizations, and enterprise identity.
Choose a library or tool
13 options in this category.
Jump to a library or tool (13)
Auth.js
Library / toolAuthentication tooling with integrations for frameworks including Next.js.
- Good for
- Adding provider-based sign-in and session handling to a web application.
Auth0
Library / toolA managed identity platform for authentication and authorization.
- Good for
- Supporting multiple sign-in providers across web and mobile applications.
Better Auth
Library / toolAuthentication tooling for TypeScript applications.
- Good for
- Implementing accounts and sessions with an extensible application-owned auth layer.
Clerk
Library / toolHosted authentication with user-management components and SDKs.
- Good for
- Adding account screens and session handling to a React application.
FusionAuth
Library / toolAn identity platform with APIs for login and user management.
- Good for
- Applications that need control over identity deployment and configuration.
IntegrationOS AuthKit
Library / toolA React integration interface for connecting external accounts.
- Good for
- Building an account-connection flow for third-party services.
Logto
Library / toolAn identity platform for application authentication and organization management.
- Good for
- Supporting login and identity features in a SaaS application.
Lucia
Library / toolEducational material about implementing authentication and sessions.
- Good for
- Learning the underlying mechanics of an application-owned authentication system.
- Keep in mind
- The Lucia library was deprecated in March 2025. Its current site teaches authentication and session implementation.
PropelAuth
Library / toolAuthentication and organization management designed for business applications.
- Good for
- Adding team accounts, organizations, and business sign-in flows.
React OAuth for Google
Library / toolReact components and hooks for Google Identity Services.
- Good for
- Adding Google sign-in to a React application.
SuperTokens
Library / toolAuthentication tooling with open-source and hosted deployment options.
- Good for
- Adding login and session features with control over the backend deployment.
Userfront
Library / toolHosted authentication tooling with frontend integration guides.
- Good for
- Adding managed user sign-in to a React interface.
- Keep in mind
- This entry covers Userfront's authentication tooling. The company homepage now describes a different product; check the original SDK before planning an integration.
WorkOS
Library / toolAPIs for enterprise identity features such as SSO and directory synchronization.
- Good for
- Making a SaaS application integrate with customers' identity systems.