Clerk Premium User Management vs Supabase Identity & Authentication Auth

Clerk Premium User Management vs Supabase Identity & Authentication Specs
Deploy Clerk Layer
👉 10,000 Free MAU • Pre-Built Drop-in UI Components
Deploy Supabase Stack
👉 50,000 Free MAU • Open-Source Firebase Alternative

Clerk Premium User Management

MFA Support
SMS Codes, TOTP, Backup Codes
Enterprise SSO SAML
Supported natively on custom Enterprise deployment structures
Custom Domain Support
Included in Free Tier default allocation for primary production URLs
Supported SDKs
Next.js, React, Remix, Gatsby, Expo, Redwood, Node.js
Social Providers
Google, GitHub, Apple, Facebook, Discord, Twitter, LinkedIn
Compliance Standards
SOC2 Type II, GDPR, CCPA Compliant out of the box
Webhook Fallback Policy
Exponential retries across a 24-hour window powered by a Svix messaging layout

Supabase Identity & Authentication

MFA Support
TOTP, WebAuthn, Phone SMS
Enterprise SSO SAML
Available on Pro & Enterprise tiers via custom identity mapping
Custom Domain Support
Available on Pro Tier ($20/mo) with full SSL configuration
Supported SDKs
Next.js, React, Vue, Svelte, Node, Python, Go, Flutter, Swift
Social Providers
Google, GitHub, Apple, Discord, GitLab, Bitbucket, Twitter
Compliance Standards
SOC2 Type II, GDPR, HIPAA Compliant (with BAA agreement)
Webhook Fallback Policy
Exponential backoff up to 24 hours with automatic failure truncation