Best Vetted Alternatives to Clerk

A

Auth0

Alternative to Clerk

SecurityB

8.2/10

Rep Score: 912 Saves

SubscriptionProfessionalCloud-Native / SaaSProprietary

Plays nice with

GitHubSlackJiraGoogleAWSAzure

Best forEnterprise teams needing mature hosted IAM

Free tier available for development and small apps; paid plans scale by monthly active users and enterprise requirements, with custom pricing for larger deployments.

Summary

Enterprise-grade identity and access management platform for authentication, authorization, and user management with broad SDK support and advanced security features.

Why Switch

Teams switch from Clerk to Auth0 when they need a more established enterprise identity platform with broader compliance, SSO, MFA, and authorization capabilities at scale.

Pros

Cons

0 builders switched

Go to Auth0

A

Auth0

Alternative to Clerk

SecurityB

8.2/10

Rep Score: 912 Saves

SubscriptionProfessionalCloud-Native / SaaSProprietary

Plays nice with

GitHubSlackJiraGoogleAWSAzure

Best for

Enterprise teams needing mature hosted IAM

Cost

Free tier available for development and small apps; paid plans scale by monthly active users and enterprise requirements, with custom pricing for larger deployments.

Summary

Enterprise-grade identity and access management platform for authentication, authorization, and user management with broad SDK support and advanced security features.

Why Switch

Teams switch from Clerk to Auth0 when they need a more established enterprise identity platform with broader compliance, SSO, MFA, and authorization capabilities at scale.

Pros

Cons

0 builders switched

Go to Auth0

K

Keycloak

Alternative to Clerk

SecurityB

8.9/10

Rep Score: 890 Saves

Open SourceOn-Premises / Self-Hosted

Plays nice with

AWSAzureGitHubGitLab

Best forSelf-hosting and open-source IAM teams

Open source and free to use; self-hosting requires infrastructure and operational overhead.

Summary

Open-source identity and access management platform for single sign-on, identity brokering, user federation, and authentication flows.

Why Switch

Teams switch from Clerk to Keycloak when they want full control over identity data and prefer a self-hosted, open-source IAM stack over a managed auth service.

Pros

🟢No license cost and highly extensible
🟢Supports SSO, OIDC, SAML, and federation

Cons

🔴Requires self-hosting and ongoing maintenance
🔴Admin and upgrade experience can be operationally heavy

0 builders switched

Go to Keycloak

K

Keycloak

Alternative to Clerk

SecurityB

8.9/10

Rep Score: 890 Saves

Open SourceOn-Premises / Self-Hosted

Plays nice with

AWSAzureGitHubGitLab

Best for

Self-hosting and open-source IAM teams

Cost

Open source and free to use; self-hosting requires infrastructure and operational overhead.

Summary

Open-source identity and access management platform for single sign-on, identity brokering, user federation, and authentication flows.

Why Switch

Teams switch from Clerk to Keycloak when they want full control over identity data and prefer a self-hosted, open-source IAM stack over a managed auth service.

Pros

🟢No license cost and highly extensible
🟢Supports SSO, OIDC, SAML, and federation
🟢Large community and strong enterprise adoption

Cons

🔴Requires self-hosting and ongoing maintenance
🔴Admin and upgrade experience can be operationally heavy
🔴Polished hosted developer experience is less turnkey than Auth0

0 builders switched

Go to Keycloak

FA

Firebase Authentication

Alternative to Clerk

SecurityB

7.4/10

Rep Score: 860 Saves

Free TierProfessionalCloud-Native / SaaSFreemium, Usage-Based Subscription

Plays nice with

GoogleSlackJira

Best forMobile and web app teams

Free tier available with usage-based billing through Google Cloud for higher volumes and advanced services.

Summary

Google-backed authentication service for web and mobile apps with email/password, social providers, phone auth, and easy SDK integration.

Why Switch

Teams switch from Clerk to Firebase Authentication when they want a quick-to-integrate sign-in service that fits naturally into a Firebase or Google Cloud-centric architecture.

Pros

🟢Very easy to implement for app developers
🟢Good fit for mobile and web apps

Cons

🔴Less enterprise CIAM depth than dedicated vendors
🔴Customization and advanced identity workflows are limited

0 builders switched

Go to Firebase Authentication

FA

Firebase Authentication

Alternative to Clerk

SecurityB

7.4/10

Rep Score: 860 Saves

Free TierProfessionalCloud-Native / SaaSFreemium, Usage-Based Subscription

Plays nice with

GoogleSlackJira

Best for

Mobile and web app teams

Cost

Free tier available with usage-based billing through Google Cloud for higher volumes and advanced services.

Summary

Google-backed authentication service for web and mobile apps with email/password, social providers, phone auth, and easy SDK integration.

Why Switch

Teams switch from Clerk to Firebase Authentication when they want a quick-to-integrate sign-in service that fits naturally into a Firebase or Google Cloud-centric architecture.

Pros

🟢Very easy to implement for app developers
🟢Good fit for mobile and web apps
🟢Backed by Google ecosystem and scalable infrastructure

Cons

🔴Less enterprise CIAM depth than dedicated vendors
🔴Customization and advanced identity workflows are limited
🔴Tighter coupling to Google Cloud ecosystem

0 builders switched

Go to Firebase Authentication

W

WorkOS

Alternative to Clerk

SecurityB

8.6/10

Rep Score: 840 Saves

SubscriptionEnterpriseCloud-Native / SaaSProprietary

Plays nice with

GitHubGitLabSlackTeamsGoogleOkta

Best forB2B SaaS adding enterprise auth features

Usage- and feature-based commercial pricing; some capabilities are available for early-stage or low-volume use through sales-assisted plans.

Summary

Developer-focused identity platform for adding SSO, SCIM provisioning, directory sync, and enterprise authentication features to SaaS products.

Why Switch

Teams switch from Clerk to WorkOS when their priority is enterprise SSO, SCIM, and directory sync for B2B customers rather than a general-purpose consumer auth layer.

Pros

🟢Excellent for B2B SaaS needing enterprise SSO and provisioning
🟢Clean APIs and strong developer experience

Cons

🔴Not a full end-to-end consumer auth platform
🔴Pricing and packaging can depend on sales engagement

0 builders switched

Go to WorkOS

W

WorkOS

Alternative to Clerk

SecurityB

8.6/10

Rep Score: 840 Saves

SubscriptionEnterpriseCloud-Native / SaaSProprietary

Plays nice with

GitHubGitLabSlackTeamsGoogleOkta

Best for

B2B SaaS adding enterprise auth features

Cost

Usage- and feature-based commercial pricing; some capabilities are available for early-stage or low-volume use through sales-assisted plans.

Summary

Developer-focused identity platform for adding SSO, SCIM provisioning, directory sync, and enterprise authentication features to SaaS products.

Why Switch

Teams switch from Clerk to WorkOS when their priority is enterprise SSO, SCIM, and directory sync for B2B customers rather than a general-purpose consumer auth layer.

Pros

🟢Excellent for B2B SaaS needing enterprise SSO and provisioning
🟢Clean APIs and strong developer experience
🟢Helps bridge the gap between startup auth and enterprise requirements

Cons

🔴Not a full end-to-end consumer auth platform
🔴Pricing and packaging can depend on sales engagement
🔴Less suitable if you need a fully self-hosted stack

0 builders switched

Go to WorkOS

SA

Supabase Auth

Alternative to Clerk

SecurityB

7.9/10

Rep Score: 820 Saves

Cloud-Native / SaaSOpen-Source / Freemium

Plays nice with

GitHubGitLabSlackGoogleAWSStripe

Best forSupabase-centric modern web apps

Open-source core with hosted plans; pricing depends on project usage, database, and platform resources.

Summary

Open-source authentication service built into Supabase for email/password, magic links, OAuth, and JWT-based session management.

Why Switch

Teams switch from Clerk to Supabase Auth when they want authentication tightly integrated with the Supabase backend and prefer an open-source foundation with a managed option.

Pros

🟢Tight integration with the Supabase backend stack
🟢Open-source foundation with a managed option

Cons

🔴Less comprehensive than dedicated enterprise IAM tools
🔴Best suited to teams already adopting Supabase

0 builders switched

Go to Supabase Auth

SA

Supabase Auth

Alternative to Clerk

SecurityB

7.9/10

Rep Score: 820 Saves

Cloud-Native / SaaSOpen-Source / Freemium

Plays nice with

GitHubGitLabSlackGoogleAWSStripe

Best for

Supabase-centric modern web apps

Cost

Open-source core with hosted plans; pricing depends on project usage, database, and platform resources.

Summary

Open-source authentication service built into Supabase for email/password, magic links, OAuth, and JWT-based session management.

Why Switch

Teams switch from Clerk to Supabase Auth when they want authentication tightly integrated with the Supabase backend and prefer an open-source foundation with a managed option.

Pros

🟢Tight integration with the Supabase backend stack
🟢Open-source foundation with a managed option
🟢Good developer experience for modern web apps

Cons

🔴Less comprehensive than dedicated enterprise IAM tools
🔴Best suited to teams already adopting Supabase
🔴Advanced enterprise features may require additional tooling

0 builders switched

Go to Supabase Auth