Clerk is more than a "sign-in box." Integrate complete user management UIs and APIs, purpose-built for React, Next.js, and the Modern Web.
Cost / License
- Freemium
- Proprietary
Platforms
- Software as a Service (SaaS)

Amazon Cognito is described as 'Lets you add user sign-up/sign-in and access control to your web and mobile apps quickly and easily. Cognito scales to millions of users, and supports sign-in with social identity providers such as FB, Google, and Amazon, and SAML 2.0' and is a identity management tool in the network & admin category. There are more than 50 alternatives to Amazon Cognito for a variety of platforms, including Web-based, SaaS, Self-Hosted, Mac and Windows apps. The best Amazon Cognito alternative is VoidAuth, which is both free and Open Source. Other great apps like Amazon Cognito are Keycloak, ZITADEL , authentik and AuthKit.
Clerk is more than a "sign-in box." Integrate complete user management UIs and APIs, purpose-built for React, Next.js, and the Modern Web.

Okta's Workforce and Customer Identity Clouds enable secure access, authentication, and automation—putting identity at the heart of business security and growth.



Your data, your control. Fully open source, authentication and authorization. No lock-ins. Deployment in Railway.app | Heroku in 120 seconds || Spin a docker image as a micro-service in your infra. Built in login page and Admin panel out of the box.


Logto helps you build the sign-in, auth, and user identity within minutes. We provide an OIDC-based identity service and the end-user experience with username, phone number, email, and social sign-in, for web and native apps.




Nubus is a modular open-source solution for centralized identity & access management, providing secure user management, role-based access control, and Single Sign-On (SSO) via a central web portal.



With AWS Identity and Access Management (IAM), you can specify who or what can access services and resources in AWS, centrally manage fine-grained permissions, and analyze access to refine permissions across AWS.

Aserto is an application authorization as a service. It helps developers add real-time resource-level access controls to their applications. SDKs and quickstarts for every popular languages are available to help you get up and running quickly.



LoginRadius is SaaS based CIAM platform that manages consumer identity and privacy, allowing businesses to customize a secure and delightful digital experience their consumers will love.


The Gluu Server is a container distribution of free open source software (FOSS) for identity and access management (IAM). SaaS, custom, open source and commercial web and mobile applications can leverage a Gluu Server for user authentication, identity information, and policy...
Permit.io is the permissions infrastructure for the internet. It is a fullstack authorization solution that enables developers to bake in access control into their code in minutes and be ready for future requirements from customers and regulators.

