Kinde Developer Authentication vs Supabase Identity & Authentication Auth

Kinde Developer Authentication vs Supabase Identity & Authentication Specs
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Kinde Developer Authentication

MFA Support
SMS Codes, TOTP, Email Codes
Enterprise SSO SAML
Supported on standard scale plans via direct dashboard configuration
Custom Domain Support
Included in primary paid tiers with zero infrastructure penalty
Supported SDKs
Next.js, React, Remix, SvelteKit, TypeScript, Python, Ruby, Elixir
Social Providers
Google, GitHub, Apple, Slack, Microsoft, Bitbucket, LinkedIn
Compliance Standards
SOC2 Type II Certified, GDPR Compliant, CCPA Aligned
Webhook Fallback Policy
Immediate delivery loops with automatic retries across standard intervals

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