Compare
Clerk vs FusionAuth
FusionAuth is self-hosted and open source, while Clerk is a managed SaaS with built-in UI components.
Side by side
- What it is
- Clerk:Clerk provides embeddable UI components, APIs, and dashboards for full-stack user authentication, management, and billing.
- FusionAuth:Auth. Built for Devs, by Devs
- Best for
- Clerk:Turnkey auth and user management
- FusionAuth:Self-hosted auth platform
- Who it’s for
- Clerk:Developers building web or mobile apps that need authentication, multi-tenant user management, and subscription billing.
- FusionAuth:—
- Pricing
- Clerk:Freemium
- FusionAuth:Free
- Plans
- Clerk:Hobby $0 · Pro $20 per month, billed annually · Business $250 per month, billed annually
- FusionAuth:—
- Works with
- Clerk:Next.js, React, Expo, React Router, Astro, Supabase, Convex, Vercel
- FusionAuth:—
- DevHunt upvotes
- Clerk:61
- FusionAuth:9
- Launched on DevHunt
- Clerk:Apr 2024
- FusionAuth:May 2024
Clerk features
- Pre-built UI components. Drop-in React components for sign-up, sign-in, profile, organization and billing UI.
- Multi-tenancy & org management. Components and APIs to create organizations, switch accounts, invite members and manage roles.
- MFA & advanced security. Built-in multifactor authentication, bot detection, passkeys and SOC 2/CCPA compliance.
- Session & device management. Full session lifecycle with active device monitoring and revocation.
- Billing & subscriptions. Ready-to-use subscription billing UI, plan definition and revenue tracking.
- SDKs for modern frameworks. Libraries for Next.js, React, Expo, React Router, Astro and more.
- API keys & machine auth. Generate secure API keys and M2M tokens for user-scoped access.
- CLI for AI agents. Command-line tool to configure Clerk without leaving the terminal.
Based on each tool's website and DevHunt data. Details may change; check the official sites.