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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Create Next Startup
Create Next Startup is a boilerplate for Next.js aimed at streamlining the development of adaptable, data-driven user interfaces. It features a thoughtfully selected collection of components that prioritize single responsibility, reduced side effects, and minimal syntax, enabling developers to choose components that best fit their requirements. The foundational setup incorporates Next.js, TailwindCSS, NextAuth.js, and React Email, with plans to introduce mobile compatibility in upcoming updates. Among its offerings are custom record types, comprehensive record overviews, detailed pages, over 15 unique field types, customizable field formulas, mechanisms for detecting record changes, and various viewing options. The platform accommodates a diverse array of field types such as attachment, text, number, currency, percentage, long text, checkbox, date, single select, repeater, relationship, object, toggle, and JSON. Additionally, it includes mail integration through Mailgun, with intentions to expand support to Sendgrid, Mailjet, Postmark by ActiveCampaign, and Resend in the future. Overall, Create Next Startup aims to empower developers with the tools they require for efficient and effective interface development.
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SaaSBold
SaaSBold is a comprehensive, production-ready boilerplate and starter kit for Next.js, designed to significantly improve both front-end and back-end performance while ensuring an excellent experience for developers. It encompasses vital functionalities including user authentication facilitated by Auth.js, accommodating social logins and magic links, as well as payment processing capabilities through Stripe, with plans to add support for Paddle and LemonSqueezy in the future. The application leverages PostgreSQL managed by Prisma for effective database management and incorporates transactional email services through Resend. Developers are provided with ready-made admin and user dashboards, a library of customizable UI components styled with Tailwind CSS, and a Figma design resource for effortless design integration. Additionally, SaaSBold includes marketing tools such as integration with MailChimp for newsletters, AI functionalities powered by OpenAI, and support for internationalization to cater to multi-language applications. Deployment is made hassle-free with a one-click solution using Vercel, allowing teams to focus more on development and less on setup processes. With these features, SaaSBold stands out as a robust choice for building scalable SaaS applications.
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