Stytch

Stytch is a modern identity and access management platform purpose-built for passwordless authentication. Founded by security experts from Plaid, Stytch replaces the traditional email-password authentication model with a more secure, user-friendly approach that leverages magic links, one-time codes, biometrics, and social authentication. For developers building applications where user experience and security matter equally, Stytch provides the infrastructure to authenticate users without password fatigue.

The platform's value proposition for solo entrepreneurs is exceptional: its generous free tier supports up to 100,000 monthly active users without any cost, making it an ideal choice for bootstrapped projects, MVPs, and growing applications. Stytch only charges when you scale beyond the free tier ($250/month for additional capacity), enabling solopreneurs to validate product-market fit without early capital expenses. The API-first design means you can implement sophisticated authentication flows in minutes, not weeks, with well-documented SDKs for JavaScript, Python, Java, Go, Ruby, and frameworks like React and Next.js.

Key features include magic links for frictionless login, one-time passwords for account verification, biometric authentication for mobile apps, comprehensive multi-factor authentication, and seamless social login integration with all major providers. Built by security professionals, Stytch emphasizes enterprise-grade security while maintaining developer-friendly abstractions. The platform includes session management, webhook support, B2B multi-tenancy capabilities, and user management tools. For any solo entrepreneur building applications that require user authentication, Stytch offers the security, user experience, and cost-effectiveness needed to scale from zero to millions of users.