Clerk gives you more than just a "sign-in box". You get a complete set of User Management UIs and APIs, including a powerful Admin Dashboard. Purpose-built for React, Next.js, and the Modern Web. Finally, an auth service that "just works".
Clerk is a tool in the Authentication category of a tech stack.
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What are some alternatives to Clerk?
JSON Web Token is an open standard that defines a compact and self-contained way for securely transmitting information between parties as a JSON object. This information can be verified and trusted because it is digitally signed.
A set of unified APIs and tools that instantly enables Single Sign On and user management to all your applications.
It is an Open Source Identity and Access Management For Modern Applications and Services. It adds authentication to applications and secure services with minimum fuss. No need to deal with storing users or authenticating users. It's all available out of the box.
It is a comprehensive identity and access management solution that gives you a robust set of capabilities to manage users and groups. You can get the reliability and scalability you need with identity services that work with your on-premises, cloud, or hybrid environment.