Amazon Cognito is part of the AWS ecosystem, making it easy to integrate with other AWS services. It offers a generous free tier with 50,000 MAUs and competitive pricing as you scale. Users can sign up with popular identity providers such as Facebook, Google, Apple, and Amazon.
Firebase, developed by Google, is a comprehensive app development platform that includes user authentication. It supports various authentication methods, including email and password, phone auth, magic links, two-factor authentication, and social identity providers. The platform is known for its ease of use, generous free tier, and low cost per monthly active user.
Auth0 by Okta is a robust B2C identity management solution that offers social login, bot detection, UI components, anonymous users, single-sign-on, and multi-factor authentication. However, it is relatively expensive, with costs reaching $1400 per month for 20,000 MAUs.
Clerk is a comprehensive authentication and user management platform that provides embeddable UIs, APIs, and admin dashboards. It supports multiple frameworks and languages, offering a free tier of 10,000 MAUs and a Pro tier with additional features such as SMS authentication, device tracking, and SAML authentication.
Supabase is an open-source alternative to Firebase, providing a complete app development platform with user authentication, cloud functions, APIs, and a PostgreSQL database. It offers social login integrations and customizable authentication components for React. The free tier includes 50,000 MAUs, with competitive pricing for higher usage.
Stytch markets itself as a leading Auth0 alternative, offering a free starter plan for up to 25 organizations and 1,000 members. Additional users cost $0.05 per monthly active user, making it a scalable and cost-effective option for user authentication.
Kinde offers a generous free plan with up to 10,500 MAUs. Their Pro plan costs $25 per month, with an additional cost of $0.0175 per MAU over 10,500. This makes Kinde a cost-effective solution for scalable user authentication.
Ory is an API-first identity manager offering authentication, analytics, access control, and machine-to-machine authentication. It supports major programming languages but does not offer a free tier. Pricing starts at $29 per month, including 1,000 daily active users, with additional costs for higher usage.
Appwrite is an open-source platform that offers a comprehensive suite of tools for building scalable applications, including user authentication. It supports various authentication methods and provides a generous free plan with 75,000 MAUs. The Pro plan is affordable at $15 per month, making it an attractive option for developers.
Auth.js, formerly known as NextAuth, is an open-source authentication library initially built for Next.js. It is free to use and supports over 80 integrations with third-party identity providers. It is compatible with Next.js, SvelteKit, and SolidStart as of March 2024, making it a flexible solution for various development environments.
What authentication solution should you use for your app? It's a hard question with many tradeoffs in terms of cost, developer experience, user experience, security, scalability etc. Below are our users' top picks with their pros and cons. Feel free to add your favorite auth providers to the list!
