Auth0
↗Hosted identity with social login, SSO and extensible authentication flows.
FreemiumNo card
Up to 25k monthly active users, social connections, passwordless login and 5 organizations.
Auth & users
11 tools
Clerk
↗Authentication and user management with polished prebuilt components.
FreemiumNo card
Hobby: 50k monthly retained users per app, up to 3 dashboard seats and 100 monthly retained organizations. No credit card required.
Descope
↗Visual authentication flows backed by APIs and SDKs for custom experiences.
FreemiumNo card
Free Forever at $0 with 7,500 MAU, 3 SSO connections, unlimited applications and core authentication flows.
Kinde
↗Straightforward authentication, organizations and feature access for SaaS apps.
FreemiumNo card
10,500 monthly active users, 5 organizations and core authentication with no credit card.
Logto
↗Authentication and authorization infrastructure for consumer and business apps.
FreemiumNo cardOSS
Free cloud plan: 50k monthly active users and core auth; the open-source edition can be self-hosted free.
Ory
↗API-first identity and access management for apps, enterprises and AI agents
FreemiumNo cardOSS
Developer: free with 2 development environments, 1 member, no production or staging, unlimited social connections, passkeys, MFA and 24 hours of historical analytics
PropelAuth
↗B2B authentication with organizations, enterprise SSO and ready-made UIs
FreemiumNo card
Free: 10,000 monthly active users, unlimited organizations and waitlist users, custom domain, 2FA, RBAC, customizable UIs and up to 10,000 transactional emails
Hexclave
↗Open-source user infrastructure for authentication, teams and more
FreemiumNo cardOSS
Free: up to 10,000 auth users, 1 dashboard admin, 1,000 emails per month, email login, OAuth and magic links
Stytch
↗APIs and SDKs for authentication, B2B identity and fraud prevention.
FreemiumNo card
Pay-as-you-go starts at $0: 10,000 MAU, unlimited organizations, 5 SSO/SCIM connections and 1,000 M2M tokens included.
SuperTokens
↗Open-source authentication with managed cloud or unlimited self-hosting
FreemiumNo cardOSS
Cloud: free under 5,000 monthly active users; self-hosted open-source is free at any scale; above that, $0.02 per MAU, with paid add-ons like MFA and account linking
WorkOS
↗User management plus enterprise features such as SSO, SCIM and audit logs.
FreemiumNo card
AuthKit is free up to 1M active users. Staging needs no card; production requires billing info. SSO and Directory Sync start at $125/connection/month.
ABOUT US
Curated tools, honestly reviewed.
Every tool in this category has been manually reviewed. Pricing, free tier limits and card requirements are checked before listing.
FAQ
Questions, answered.
Are these the best tools in this category?＋
They're the ones we'd actually use. We prioritize tools with a clear use case, a working free tier, and honest pricing, not the most popular or most marketed.
How do I filter by free tools only?＋
Use the pricing filter in the sidebar. Select Free or Freemium to narrow the list. Each card also shows whether a card is required.