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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FastPocket
FastPocket is an all-in-one SaaS boilerplate crafted to accelerate the creation of online businesses by supplying a ready-made codebase, an extensive library of components, thorough documentation, and templates for deployment, along with guides that address development, design, and marketing strategies. It incorporates vital features such as payment processing via Stripe, user authentication systems, and pre-designed email templates, all built on the Next.js framework. Additionally, the platform presents customizable UI components like buttons, modals, and popovers, along with essential sections such as pricing, FAQs, and blogs, which allows for the quick construction of web pages. FastPocket also accommodates a range of backend solutions by providing deployment templates that work seamlessly with platforms like Digital Ocean, Fly.io, and Pockethost, thus offering developers flexibility in their hosting choices. By integrating TailwindCSS and DaisyUI, it ensures that styling can be applied quickly and effectively to reflect particular brand identities, making it a versatile choice for entrepreneurs. This comprehensive toolkit ultimately streamlines the process of launching and managing online ventures.
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SvelteShip
SvelteShip is an all-encompassing full-stack boilerplate that significantly accelerates the process of developing and deploying applications using SvelteKit. It incorporates a variety of essential technologies and services, such as SvelteKit with TypeScript, Supabase for managing authentication and databases, Stripe for handling payments and billing, TailwindCSS and DaisyUI for creating responsive user interfaces, Mailgun for providing email services and implementing magic link authentication, and Cloudflare for seamless hosting and deployment. With SvelteShip, developers gain access to pre-designed UI components like navigation bars and checkout buttons, enabling swift project launches. The framework supports multiple authentication options, including social login integration with Google and GitHub, and features capabilities like pricing pages, one-time payments, subscriptions, and effective webhook management via Stripe. Additionally, the boilerplate comes equipped with user profiles and customer tables that automatically include new users, thanks to Supabase's functionality. Customization is straightforward, allowing developers to easily modify fonts, themes, colors, and enable dark mode features, thus ensuring that the final application aligns with their design vision. This flexible approach not only enhances the user experience but also streamlines the development workflow.
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