Trusted by fast-growing companies around the world
Auth & User components
Everything you need to onboard your users, and let them manage their account.
<SignIn/>
An optimized sign in experience thats also completely customizable. Choose the auth strategies you need — passwords, email codes or links, OAuth and more.
Auth & User components
Everything you need to onboard your users, and let them manage their account.
<SignIn/>
An optimized sign in experience thats also completely customizable. Choose the auth strategies you need — passwords, email codes or links, OAuth and more.
Built for the Modern Web
The most powerful APIs
built specifically for the Modern Web
New technologies have made building on the web much easier; however, many dev tools haven’t kept up. At Clerk, we believe a component is worth 1,000 APIs and that they should work seamlessly in any stack so that you can build faster.
Component Customization
Helper components that help control the flow of your application across different states.
Appearance
Modify the theming of the prebuilt UIs. Compatible with Tailwind CSS, Chakra UI, Styled Components, custom CSS, and more. Light, Retro, Yolo...we can handle it all.
Localization
Override the default strings for any element to localize to any language or change the wording to match your brand.
Component Customization
Helper components that help control the flow of your application across different states.
Appearance
Modify the theming of the prebuilt UIs. Compatible with Tailwind CSS, Chakra UI, Styled Components, custom CSS, and more. Light, Retro, Yolo...we can handle it all.
Localization
Override the default strings for any element to localize to any language or change the wording to match your brand.
Why Clerk
Created by engineers and founders, we built Clerk from the ground up to solve our own problem.
Developer Experience
We are a team of dev-tool experts, and know all the pain points involved with building for the web. We’ve painstakingly built the authentication platform you’ve always wished you had — one that “just works”, and one that still keeps you in control of your user data and user experience.
Secure by Default
We are a team of experienced web-security experts focused on helping you ship your product securely, without having to sweat over all the intricate security details. All of our APIs are built following industry best-practices and are regularly audited by 3rd parties.
Dedicated Partners
We know auth is core to your app, so we go above and beyond to make sure you’re well supported. There’s always someone on call to answer any questions you may have, or there in case of emergencies. We offer industry leading SLAs and support agreements.
Testimonials
Trusted by startups and
the world's largest companies
“Clerk's integration
gives Supabase developers another incredible option for handling authentication. And the Clerk team are a pleasure to work with.”
Paul Copplestone
Supabase Cofounder
Start now,
no strings attached
Start completely free for up to 10,000 monthly active users and up to 100 monthly active orgs. No credit card required.
Pricing built forbusinesses of all sizes.
Learn more about our transparent per-user costs to estimate how much your company could save by implementing Clerk.
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