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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Nextless.js
Accelerating the creation of scalable and production-ready SaaS products is made easy with Nextless.js, a robust SaaS starter kit tailored for developers utilizing Next.js and serverless technologies. This kit encompasses crucial features like AWS Cognito for seamless authentication, which includes options for email and social logins, as well as multi-factor authentication and Stripe integration for managing subscription payments, complete with webhook capabilities. Enhancing team productivity, it allows users to invite colleagues via email and provides support for multi-tenancy through tenant isolation implemented via the silo model. Additionally, developers gain access to pre-built user and admin dashboards, customizable forms, and a responsive landing page styled with Tailwind CSS. Aiming for an optimal developer experience, Nextless.js incorporates tools such as TypeScript, ESLint, Prettier, and Husky, while fully utilizing the AWS ecosystem, including services like Amplify, API Gateway, and AWS CDK for streamlined deployment and management. Ultimately, this starter kit not only accelerates development but also ensures that applications are equipped with modern features and best practices to thrive in today's competitive market.
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AWS Lambda
Execute your code without having to worry about server management, paying solely for the computational resources you actually use. AWS Lambda allows you to run your code without the need for provisioning or overseeing servers, charging you exclusively for the time your code is active. With Lambda, you can deploy code for nearly any kind of application or backend service while enjoying complete freedom from administrative tasks. Simply upload your code, and AWS Lambda handles everything necessary for running and scaling it with exceptional availability. You have the flexibility to set your code to automatically respond to triggers from other AWS services or invoke it directly from any web or mobile application. Furthermore, AWS Lambda efficiently runs your code without the need for you to manage server infrastructure. Just write your code and upload it, and AWS Lambda will take care of the rest. It also automatically scales your application by executing your code in response to each individual trigger, processing them in parallel and adapting precisely to the workload's demands. This level of automation and scalability makes AWS Lambda a powerful tool for developers seeking to optimize their application's performance.
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