FusionAuth is the authentication and authorization platform engineered for developers who demand flexibility and control. Built from the ground up to integrate with any stack, every feature — from user registration to MFA and SSO — is exposed via a modern, well-documented API.
Support for every major identity protocol is included out of the box: OIDC, SAML, OAuth2, JWT, passwordless login, social sign-on, and more. Whether you’re building a greenfield app or retrofitting auth into a legacy system, FusionAuth adapts to your use case — not the other way around.
Need compliance? FusionAuth helps you meet GDPR, HIPAA, and COPPA standards quickly and reliably.
Deploy it your way: install on Linux, Windows, macOS, Docker, or Kubernetes — or go with FusionAuth Cloud, our managed SaaS hosting. No black boxes. No vendor lock-in. Just powerful, customizable auth that works the way you do.
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Auth0 takes a modern approach to Identity and enables organizations to provide secure access to any application, for any user. Auth0 is highly customizable, and simple yet flexible. Safeguarding billions of login transactions each month, Auth0 delivers convenience, privacy, and security so customers can focus on innovation.
With Auth0, you can rapidly integrate authentication and authorization for web, mobile, and legacy applications, with new Fine Grained Authorization (FGA) that goes beyond role-based access control.
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BoilerCode
These boilerplates are prepared for immediate use; simply clone them to begin your project. BoilerCode serves as a comprehensive collection of SaaS boilerplates designed to accelerate the launch of your next product. With BoilerCode, you receive built-in integrations for Stripe, LemonSqueezy, authentication, and email functionalities right from the start, ensuring a smooth setup process. This allows developers to focus on building unique features rather than dealing with repetitive tasks.
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ShipFast
ShipFast serves as a Next.js boilerplate aimed at accelerating the creation of SaaS products, AI applications, and diverse web solutions, allowing entrepreneurs to roll out their ventures in mere days rather than extending the process into weeks. It incorporates vital functionalities, such as user authentication through NextAuth, supporting options like Google OAuth and Magic Links, and facilitates payment processing with Stripe or Lemon Squeezy, as well as email services via Mailgun, complete with DNS configurations to mitigate spam issues. The platform is compatible with databases such as MongoDB and Supabase, offering users adaptability in managing their data. Additionally, ShipFast includes built-in SEO enhancements, a ready-to-use blog structure, and a variety of UI components and animations to improve user interaction. Comprehensive documentation and tutorials are provided to assist users in navigating the setup and deployment process, significantly reducing the time spent on repetitive tasks while enabling a sharper focus on essential business growth. Ultimately, ShipFast is designed not only to streamline initial development but also to support ongoing scalability and functionality as businesses evolve.
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