Need more than just a sign-in box? Clerk is a complete suite of embeddable UIs, flexible APIs, and admin dashboards to authenticate and manage your users.
Trusted by fast-growing companies around the world
Pixel-perfect UIs, embedded in minutes
Simply add <SignIn/>, <SignUp/>, <UserButton/>, <UserProfile/> for complete user management functionality. Match to your brand with any CSS library, then deploy to your own domain — no more jarring redirects!
Ever feel like authentication requirements change with the season? Clerk keeps up with the latest trends and security best practices.
Each user's self-serve multifactor settings are enforced automatically during sign-in.
Clerk is SOC 2 type 2 certified and CCPA compliant. We conduct regular third-party audits and penetration tests.
Clerk manages the full session lifecycle, including critical security functionality like active device monitoring and session revocation.
Add high-conversion Social Sign-on (SSO) to your application in minutes. 20+ options and growing.
Dramatically reduce fraudulent sign-ups with built-in, continually updated machine learning.
Fast and reliable one-time passcode delivery with built-in brute force prevention.
Simple and secure password authentication, complete with breach detection and recovery options.
Improve sign-up conversion rates and filter out spam/fraud with Magic Links.
Gain full control of your application by leveraging Clerk's 20+ webhook events.
Seamless SDKs for modern frameworks
Clerk keeps developer experience front-and-center by providing helpful SDKs for most modern frameworks on web and mobile.All frameworks
Integrations with the tools you love
Leverage Clerk as the source of truth for your user data and seamlessly integrate with the tools that you already depend on.All integrations
The easy solution to multi-tenancy
Clerk has all the features you need to onboard and manage the users and organizations of your multi-tenant SaaS application.
Powerful primitives to fully customize your app's authorization story.
Let your users discover and join organizations based on their email domain.
Fuel your application's growth by making it simple for your customers to invite their team.
Clerk's UI components add turn-key simplicity to complex Organization management tasks.
Trusted by startups and the world's largest companies
Join the growing number of customers and champions who trust Clerk for authentication and user management.