Userfront Alternatives

Firebase, provided by Google, is a backend service and application development platform. It uses AI, cloud infrastructure, and cross-platform SDKs for efficient app development. Firebase offers tools and infrastructure for app creation and business growth.

AuthKit is a Radix-powered open source authentication UI built for effortless customizations. User Management is the backend platform handling email verification, account linking, bot blocking, organization modeling, and more.

Open Source Identity and Access Management for modern Applications and Services.

Stack is an open-source, self-hostable, and highly customizable authentication and user management system.

Hanko is an open source authentication and user management solution that takes you on the journey beyond passwords. For better security, higher conversion rates, and happier users.

You can connect any application (written in any language or on any stack) to Auth0 and define its Connection, the method used to authenticate the users of that application:

Clerk is more than a "sign-in box." Integrate complete user management UIs and APIs, purpose-built for React, Next.js, and the Modern Web.

With AWS Identity and Access Management (IAM), you can specify who or what can access services and resources in AWS, centrally manage fine-grained permissions, and analyze access to refine permissions across AWS.

Okta's Workforce and Customer Identity Clouds enable secure access, authentication, and automation—putting identity at the heart of business security and growth.

Amazon Cognito lets you add user sign-up/sign-in and access control to your web and mobile apps quickly and easily. Cognito scales to millions of users, and supports sign-in with social identity providers such as FB, Google, and Amazon, and SAML 2.0.

LoginRadius is SaaS based CIAM platform that manages consumer identity and privacy, allowing businesses to customize a secure and delightful digital experience their consumers will love.

Logto helps you build the sign-in, auth, and user identity within minutes. We provide an OIDC-based identity service and the end-user experience with username, phone number, email, and social sign-in, for web and native apps.