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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Volca
Volca is an all-encompassing SaaS boilerplate and starter kit crafted to streamline the creation and deployment of SaaS applications. It features a monorepo that encompasses a high-performance static landing page, a React-based dashboard, and a Node.js REST API. The landing page is generated as pre-rendered static HTML files, which guarantees rapid loading times and enhances search engine visibility, and it is developed using React and TypeScript. The dashboard acts as the main user interface, providing functionalities such as user registration, subscription oversight, and team collaboration, enabling users to initiate projects and invite colleagues. The backend API is constructed with Node.js and TypeScript, functioning within a serverless framework that prioritizes cost efficiency, security, and performance. Volca also incorporates robust and secure authentication mechanisms with AWS Cognito, facilitates social sign-ins through platforms like Apple, Google, and Facebook, and features subscription management capabilities powered by Stripe. Additionally, the platform's architecture is designed to be scalable, allowing developers to easily adapt and expand their applications as needed.
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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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