Clerk

Clerk offers a comprehensive user management platform for modern web applications. Key features include:

Authentication and Identity:

• Social sign-on with 20+ providers
• Email and SMS one-time passcodes
• Magic links for passwordless auth
• Multifactor authentication
• Bot detection and fraud prevention

User Management:

• Customizable user profiles
• Session management across devices
• Role-based access control

Organization Management:

• Multi-tenancy support
• Custom roles and permissions
• Auto-join based on email domain
• Team invitations

Developer Experience:

• Pre-built UI components (SignIn, UserProfile, etc.)
• SDKs for React, Next.js, Remix and more
• Webhooks for extensibility
• Easy integration with databases like Supabase

Security and Compliance:

• SOC 2 Type 2 certified
• CCPA compliant
• Regular security audits

Clerk aims to simplify user management for developers while providing a seamless experience for end-users. It's free for up to 10,000 monthly active users, making it suitable for projects of all sizes.