Free Auth tiers
26 free tiers, safest first. Each one shows the limits, whether it needs a card, and how fresh the data is.
Free tierWhat you get freeRiskCardFreshness
Supabase · Auth
50,000 monthly active users · Unlimited total users · Social OAuth logins and OAuth 2.1 server included
Billing risk: None
No card
✓ 28 Sep 2026
Okta · Auth
Up to 10 active users (non-production only) · 100 authentications/minute rate limit · Org auto-expires after 90 consecutive days of inactivity
Billing risk: None
No card
✓ 28 Sep 2026
Clerk · Auth
50,000 monthly retained users per app · Unlimited applications · Up to 3 dashboard seats
Billing risk: None
No card
✓ 28 Sep 2026
Ory · Auth
2 development environments · 0 production and 0 staging environments (dev/test only) · 1 team member
Billing risk: None
No card
✓ 28 Sep 2026
WSO2 · Auth
15,000 monthly active users · Up to 5 applications · 1 B2B organization
Billing risk: None
No card
✓ 28 Sep 2026
Descope · Auth
7,500 monthly active users (MAUs) · 10 monthly active tenants · 3 SSO connections
Billing risk: None
No card
✓ 28 Sep 2026
Kinde · Auth
10,500 monthly active users (MAU) · Unlimited applications · 10 feature flags
Billing risk: None
No card
✓ 28 Sep 2026
Logto · Auth
Up to 50,000 monthly active users (MAU) · 3 total applications · 1 machine-to-machine app
Billing risk: None
No card
✓ 28 Sep 2026
ZITADEL · Auth
100 daily active users · Unlimited stored users · Unlimited organizations
Billing risk: None
No card
✓ 28 Sep 2026
LoginLlama · Auth
1,000 login checks/month · Full API with risk scoring and risk codes
Billing risk: None
No card
✓ 28 Sep 2026
Scalekit · Auth
25,000 monthly active users (hard cap, no overages) · Up to 25 organizations · 1 SSO connection
Billing risk: None
No card
✓ 28 Sep 2026
Cloud-IAM · Auth
Up to 100 users, unlimited monthly active users · One realm (mutualized HA deployment) · MFA, SSO, and social login providers
Billing risk: None
No card
✓ 28 Sep 2026
Auth0 · Auth
25,000 monthly active users · 5 organizations · Unlimited social connections (subject to system limits)
Billing risk: Low
No card
✓ 28 Sep 2026
Authgear · Auth
Unlimited monthly active users (MAUs) · Up to 2 applications · Up to 2 admin seats
Billing risk: Low
No card
✓ 28 Sep 2026
Hexclave · Auth
Up to 10,000 auth users · 1 dashboard admin · 1,000 emails/month
Billing risk: Low
No card
✓ 28 Sep 2026
SuperTokens · Auth
Self-hosted core: unlimited users, free forever (open source) · Managed cloud: free under 5,000 monthly active users · 3 free dashboard admin users
Billing risk: Low
No card
✓ 28 Sep 2026
WorkOS · Auth
1,000,000 monthly active users free (User Management) · Per additional 1M users: $2,500/month · Enterprise SSO: from $125/connection/month (volume discounts from 16+)
Billing risk: Low
No card
✓ 28 Sep 2026
Authress · Auth
1,000 billable calls/month free, then $0.0012 per call · Unlimited tenants · Unlimited applications
Billing risk: Low
No card
✓ 28 Sep 2026
PropelAuth · Auth
10,000 monthly active users · Unlimited organizations · Unlimited waitlist users
Billing risk: Low
No card
✓ 28 Sep 2026
Hanko · Auth
10,000 MAU · 2 projects · Passkeys, passwords, passwordless, social SSO
Billing risk: Low
No card
✓ 1 Oct 2026
Microsoft · Auth
Unlimited SSO across SaaS apps · Up to 500,000 directory objects · Multi-factor authentication for cloud users
Billing risk: Low
Card
✓ 28 Sep 2026
Stytch · Auth
10,000 MAU (users and AI agents) · Unlimited organizations · 5 SSO or SCIM connections
Billing risk: Medium
No card
✓ 1 Oct 2026
Firebase AuthChanged
Google Cloud · Auth
Email/password, anonymous, and social sign-in at no cost · Phone/SMS verification requires the Blaze (pay-as-you-go) plan · 150 password reset emails/day on Spark
Billing risk: Medium
No card
✓ 28 Sep 2026
Amazon Web Services · Auth
10,000 MAU per month (direct or social sign-in, Lite or Essentials tier) · 50 MAU per month for SAML or OIDC federated users · Does not expire after 12 months
Billing risk: Medium
Card
✓ 1 Oct 2026
Phase Two · Auth
30-day free trial on the Starter plan · Unlimited users, sized for about 5,000 active users · 2 custom domains on Starter
Billing risk: Medium
Card
✓ 28 Sep 2026