Clerk Auth
Complete user management for modern apps.
Drop-in authentication with pre-built UI components, social login, MFA, and user management for React/Next.js.
About Clerk Auth
Clerk is a complete user management platform that provides drop-in authentication and user management for modern web applications. Instead of spending weeks building auth flows, Clerk gives you pre-built, customizable UI components for sign-up, sign-in, user profiles, and organization management.
Clerk handles the hard parts: secure password storage, social OAuth (Google, GitHub, Discord, and 20+ more), magic links, passkeys, multi-factor authentication (TOTP, SMS), session management, and bot protection. It integrates natively with Next.js, Remix, and other React frameworks with a few lines of code.
The Clerk dashboard shows all users, their sessions, active devices, and audit logs. Organizations (for multi-tenant B2B SaaS) are built-in. Clerk SDK is available for React, Next.js, Node.js, Go, Ruby, Python, and more.