Head-to-head · Identity and Access Management Software
WSO2 Identity Server vs Clerk
WSO2 Identity Server leads on 0 checks, Clerk on 0, and 4 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreWSO2 Identity Server · 7.4/10
- Free planboth
- Most featuresWSO2 Identity Server · 3 of 3
WSO2 Identity Server scores higher on our rubric for identity and access management software: 7.4 against 6.6 out of 10; our editors rank them #18 and #26.
WSO2 Identity Server is the better fit for open-source adaptive IAM for self-hosting. Clerk is the better fit for developer teams building application IAM.
- WSO2 Identity Server fits best
Open-source adaptive IAM for self-hosting
- Clerk fits best
Developer teams building application IAM
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Side by side
| Feature | WSO2 Identity Server 7.4/10 Visit ↗ | Clerk 6.6/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 7.4 | 6.6 |
| Ranking | #18 in Identity and Access Management Software | #26 in Identity and Access Management Software |
| Best for | Open-source adaptive IAM for self-hosting | Developer teams building application IAM |
| Pricing model | Free | Free plan + paid |
| Starting price | Free plan | $20/mo |
| Free plan | ✓ | ✓ |
| Free trial | — | — |
| Deployment | Self-hosted | Cloud, Mobile, Browser extension |
| Integrations | 5 integrations | 12 integrations |
| Features WSO2 Identity Server 3/3 · Clerk 2/3 | ||
| Directory sync | ✓ | ✓ |
| Lifecycle provisioning | ✓ | ✓ |
| Adaptive access policies | ✓ (best) | Not checked yet |
| Specs | ||
| SSO protocols | OAuth, OpenID Connect, SAML 2.0 | SAML, OIDC, OAuth 2.0 |
| MFA methods | TOTP, Email OTP, SMS OTP, Passkey, Push Notification | SMS verification codes, authenticator applications (TOTP), backup codes, passkeys |
| Included users | Not checked yet | Not checked yet |
| Our review | ||
| Pros |
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| Cons |
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| Our verdict | WSO2 Identity Server is an open-source identity and access management product for organizations building customer, workforce, partner, and API access systems. It is intended for developers and administrators who need single sign-on,… Read the review → |
Clerk provides authentication and user management for teams building consumer, B2B, and multi-tenant applications. Its scope covers prebuilt sign-up and sign-in components, user profiles, organizations, billing components, enterprise SSO,… Read the review → |
Strengths and trade-offs
WSO2 Identity Server — where it wins
- Adaptive authentication uses device, location, and context signals.
- Supports OAuth, OpenID Connect, SAML 2.0, SCIM 2.0, and MFA.
- Connects LDAP, Active Directory, JDBC, and SAML identity providers.
Where it doesn't
- Self-hosted deployment requires organizational infrastructure and administration.
- Its broad feature set may exceed the needs of simple SSO projects.
- Teams seeking managed IAM may prefer a cloud-focused alternative.
Clerk — where it wins
- Free Hobby plan includes prebuilt authentication and profile UIs
- Supports web, iOS, Android, Chrome extensions, and APIs
- Covers SSO, MFA, directory sync, provisioning, and authorization
Where it doesn't
- Hobby limits each application to 50,000 monthly retained users
- MFA and custom session lifetimes start on the Pro plan
- Its broad feature set may exceed the needs of simple sign-in projects
- WSO2 Identity Server7.4/10 · Free plan
A broad self-hosted IAM foundation for teams that need control over identity and access.
Visit WSO2Full verdict → - Clerk6.6/10 · Free plan
A broad application IAM toolkit with a free plan and extensive platform coverage.
Visit ClerkFull verdict →
All identity and access management software comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update