SuperTokens is an open source user authentication solution backed by Y-Combinator. We're an alternative to Auth0, Firebase Auth and AWS Cognito. Using our SDKs developers can add secure, hassle free authentication to their mobile application or website in less than a day. We enable startups to launch quicker and focus on their core product offering. We're a remote company with offices in San Francisco, California, USA and Mumbai, Maharashtra, India. We provide the following features: 1. Different types of login: - Email / password - Passwordless (OTP or Magic link based) - Social / OAuth 2.0 - Multi-factor authentication - Microservice authentication 2. Access control (RBAC) 3. Session management 4. User management 5. Self hosted / managed cloud For more information, please visit: https://github.com/supertokens