The most modern user management system for React & Next.js apps
Clerk is a modern user management platform specifically designed for React, Next.js, and other JavaScript frameworks. With pre-built UI components and a developer-friendly API, you can implement a complete authentication solution in minutes.
Over 15,000 developers use Clerk for fast, secure, and beautiful authentication in their modern web applications.
Pre-built, customizable components
React/Next.js hooks & components
Theme system & CSS-in-JS support
SignIn, SignUp, UserProfile ready-to-use
Multi-tenancy & team management
JWT tokens & session handling
Real-time user events
Drop-in React components
Customizable login component
Registration flow component
Complete profile management
Team & org management
Modern developer experience
The difference from traditional auth solutions
Compare different authentication services
Tell us what you need and get exact pricing + timeline in 24 hours
Launch your product quickly and start generating revenue
No surprises - clear pricing and timelines upfront
Transparent communication and guaranteed delivery
Built to grow with your business needs