Auth

Clerk · Hobby

Free Clerk plan with 50,000 monthly retained users per app, prebuilt sign-in UIs and 100 retained organizations; no card needed.

• 50Kmonthly active users
• 100organizations / month
• 3seats

• Can't bill you
• No card
• Works in China

Hanko · Starter

Hanko Cloud's free Starter plan covers 10,000 monthly active users and 2 projects, with passkeys, passwords, passwordless login, social sign-in, MFA and a custom domain; no card needed. Webhooks, the Admin API, custom SMTP and team member invites need a paid plan.

• 10Kmonthly active users
• 2projects

• Commercial use
• Can't bill you
• No card

Kinde · Free

Kinde's free plan includes 10,500 monthly active users, five organizations, MFA and custom domains with no card required.

• 10.5Kmonthly active users
• 5organizations / month
• Unlimitedseats

• Commercial use
• Can't bill you
• No card

Logto · Free

Logto Cloud's free plan supports up to 50,000 monthly active users and 50,000 access tokens a month across three applications.

• 50Kmonthly active users
• 50Kaccess tokens / month
• 3applications

• Can't bill you
• No card

Auth0 · Free

Auth0's free plan covers up to 25,000 monthly active users, one custom domain, five organizations and one enterprise connection.

• 25Kmonthly active users
• 5organizations
• 1SSO connections

• Deletes after 150 idle days
• Can't bill you
• No card

Descope · Free Forever

Descope's Free Forever plan covers 7,500 monthly active users, 10 active tenants and 3 SSO connections, with no overage billing.

• 7.5Kmonthly active users
• 10active tenants / month
• 3SSO connections

• Can't bill you

Hexclave (formerly Stack Auth) · Free

Hexclave's free cloud tier allows up to 10,000 user accounts, one dashboard admin and 1,000 emails a month; self-hosting is free.

• 10Kuser accounts
• 1seats
• 1Kemails / month

ZITADEL · Free

ZITADEL Cloud's free plan stores unlimited users and organizations but allows 100 daily active users, one instance and one admin.

• 100daily active users / month
• Unlimiteduser accounts
• Unlimitedorganizations

• Deletes after 30 idle days
• No card

Authing · 免费版 (Free)

Authing's permanent free plan supports up to 8,000 monthly active users, one self-built app and one social connection.

• 8Kmonthly active users
• 1applications
• 10SMS login codes

• Works in China

Stytch · Pay as you go

Stytch's pay-as-you-go plan is free for the first 10,000 monthly active users, five SSO or SCIM connections and unlimited organizations.

• 10Kmonthly active users
• 5SSO connections
• Unlimitedorganizations

• Bills overage

SuperTokens · Free tier

SuperTokens' managed service is free while you stay under 5,000 monthly active users, with email/password, passwordless and social login, session management, roles and 3 dashboard users. MFA, account linking and multi-tenancy are paid add-ons that can be tested free on development instances.

• 5Kmonthly active users
• 50core API requests per second / second
• 3seats

• Bills overage

Amazon Web Services · Lite / Essentials free tier

Cognito user pools on the Lite or Essentials tier include 10,000 monthly active users free per account, with no expiry; usage above is billed.

• 10Kmonthly active users
• 50SAML/OIDC federated MAU

• Commercial use
• Bills overage
• Works in China

WorkOS · AuthKit (free up to 1M users)

WorkOS User Management with AuthKit is free up to 1 million monthly active users; a card is needed before going to production.

• 1Mmonthly active users

• Bills overage
• Card required