Clerk
More than authentication, complete user management
Clerk launched on October 20, 2022 with 238 votes, #105 of 3,153 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 4 years on.
What it does
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".
The easiest way to add authentication and user management to your application. Purpose-built for React, Next.js, Remix, and “The Modern Web”.
Need more than sign-in? Clerk gives you full stack auth and user management — so you can launch faster, scale easier, and stay focused on building your business. Drop-in UI components for authentication, profile management, organization management, and billing. Match to your brand with any CSS library, then deploy to your own domain. Add user <SignUp/> and <SignIn/> , provide account access through a dropdown menu, and manage profile and security settings. Allow your users to create new organizations, switch between accounts, manage settings and billing, and view memberships and invitations. Display pricing plans with feature comparisons and subscription options to help your users choose…from clerk.com
Does a similar job
all alternatives →
- CAClerk – all of user management as-a-service, not just authentication2021 · clerk.dev · ▲582
The task came with a sense of helplessness. We knew what "great" looked like, but it was impractical to build all of that functionality.
Pre-built Auth UI for React2022 · supabase.com · ▲349Install Auth UI and start authenticating users with Supabase
Stack, an open-source Clerk/Firebase Auth alternative2024 · stack-auth.com · ▲144Hey HN! Happy to finally launch Stack. We made it because we like to put apps into production quickly, and authentication & user management was taking up way too much time. We have components like and that automatically adapt to whatever theme & design system you're using. Check the blog post to see the example with Radix UI and Joy UI. Also, there's an admin dashboard for monitoring and editing accounts. Stack is 100% AGPL/MIT-licensed, so you can self-host it. Cheers!
Open-Source Auth for NextJS / React2021 · ory.dev · ▲107Add open source login to any Next.js and React single page app (SPA) using free open source.

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