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Supabase comes with its own authentication solution, based on a fork of Netlify’s goTrue. Supabase provides authentication flows like email-password, social login, and phone number based OTP and is ideal for quickly building out authentication for many use cases. SuperTokens is an Open Source authentication solution. We built SuperTokens from the ground up to be easy to use and customizable. We have a managed service, but if you prefer to handle your own data, you can use our self-hosted solution.