FusionAuth
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
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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Dome
Dome is a powerful and all-encompassing boilerplate crafted with Next.js and Tailwind CSS, specifically designed to expedite the development of SaaS Minimum Viable Products (MVPs). It includes a variety of essential features such as a landing page, a countdown timer, and a blog, which allows entrepreneurs to prioritize their market entry strategies and revenue growth instead of concentrating on basic functionalities. The template is equipped with convenient authentication options, including social login capabilities and NextAuth, ensuring that user access is smooth and efficient. Payment processing is made easy through integrations with Stripe and Lemon Squeezy, which provide effective subscription management solutions. To enhance customer interaction, the template incorporates feedback tools like Chatwoot, Papercups, and Crisp Chatbot, along with email service integrations such as Mailgun. Additionally, analytics connections with platforms like Hotjar, Google Analytics, Matomo, and Plausible offer valuable insights into user behavior, enabling informed decision-making for future improvements. This comprehensive setup ultimately empowers entrepreneurs to launch their products with greater confidence and efficiency.
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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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