SuperTokens is an open source user authentication solution. Using SuperTokens, developers can add secure, hassle free auth to their mobile application or website in less than a day. It is an alternative to Auth0, Firebase Auth and AWS Cognito.
India
Userfront makes it easy to add authentication, access control, SSO, and multi-tenancy to any web application.
United States
The authentication platform that helps you secure your apps with branded login pages and your choice of identity methods.
United States
NextAuth.js is a complete open-source authentication solution for Next.js applications. It is designed from the ground up to support Next.js and Serverless.
EU-hosted managed identity platform. OAuth 2.0, OpenID Connect, SAML. White-labeling, multi-tenancy, passkeys. Frankfurt datacenter. Free tier included.
Germany
EU
Unified APIs and SDKs enable Single Sign-On, Directory Sync, passwordless and multi-factor authentication, audit logs, user management, user provisioning, webhook event handling, and admin portal setup for integration with major identity providers and SaaS platforms.
United States
Kno is an API for providing secure passwordless authentication for your web application. Kno offers web-based, one click access
Identity solution supporting passwordless, biometrics, social logins, enterprise SSO, and multi-factor authentication. Offers customizable flows, admin portal, audit logging, brute-force protection, compliance, APIs, SDKs, cloud and self-hosted options for web and mobile.
United Kingdom
CentralAuth is an authentication service that provides user login functionality for web applications. The platform implements security protocols and authentication flows, allowing development teams to integrate user authentication without building these systems internally.
NetherlandsEU
Corbado is the passkey intelligence platform for enterprise CIAM teams. See why passkey adoption is flat, what's breaking logins, and how to scale passkeys to millions.
GermanyEU
JustAuthenticateMe offers a simple authentication-as-a-service for your web apps. It uses magic links in emails as a way to verify identity so that neither you nor your users have to worry about passwords.
United Kingdom
