# Clerk vs Protectimus MFA for ADFS: side-by-side comparison (2026)

[Clerk](https://cybersectools.com/tools/clerk) is a commercial [CIAM](https://cybersectools.com/categories/ciam) solution by [Clerk](https://cybersectools.com/companies/clerk). [Protectimus MFA for ADFS](https://cybersectools.com/tools/protectimus-mfa-for-adfs) is a commercial [MFA & passwordless](https://cybersectools.com/categories/user-authentication) solution by [Protectimus Limited](https://cybersectools.com/companies/protectimus-limited). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | Clerk | Protectimus MFA for ADFS |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | CIAM | MFA & Passwordless |
| Verified | No | No |
| Deployment type | Cloud | Hybrid |
| Company size fit | Startup, SMB, Mid-Market | SMB, Mid-Market, Enterprise |
| Company | Clerk | Protectimus Limited |
| Headquarters | – | – |

### Use cases and capabilities

| | Clerk | Protectimus MFA for ADFS |
|---|---|---|
| Authentication | Yes | Yes |
| SSO | Yes | Yes |
| MFA | Yes | Yes |
| Authorization | Yes | – |
| Multi Tenancy | Yes | – |
| Active Directory | – | Yes |
| Windows | – | Yes |
| Microsoft | – | Yes |

### Core features

**Clerk**

10 features listed. Sign in on the page to see them.

**Protectimus MFA for ADFS**

5 features listed. Sign in on the page to see them.

### Integrations

**Clerk**

6 integrations listed. Sign in on the page to see them.

**Protectimus MFA for ADFS**

10 integrations listed. Sign in on the page to see them.

## Which one fits you

Based on what each listing shows: deployment, company size, price and open source.

- [Clerk](https://cybersectools.com/tools/clerk) fits if you want a cloud product and you are a startup.
- [Protectimus MFA for ADFS](https://cybersectools.com/tools/protectimus-mfa-for-adfs) fits if you need both cloud and on-premises options and you are an enterprise.

## Clerk vs Protectimus MFA for ADFS FAQ

Common questions when comparing Clerk vs Protectimus MFA for ADFS for CIAM.

### What is the difference between Clerk and Protectimus MFA for ADFS?

**Clerk**: Authentication and user management platform with pre-built UI components, built by Clerk.

**Protectimus MFA for ADFS**: MFA plugin that adds two-factor authentication to ADFS environments, built by Protectimus Limited.

The table above shows where their features, integrations, deployment and company size fit differ.

### Who makes Clerk and Protectimus MFA for ADFS?

**Clerk** is made by Clerk. **Protectimus MFA for ADFS** is made by Protectimus Limited. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Clerk a good alternative to Protectimus MFA for ADFS?

In part. Clerk and Protectimus MFA for ADFS are not in the same category on CybersecTools. Both cover MFA, Authentication, SSO. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Clerk vs ZITADEL](https://cybersectools.com/compare/clerk-vs-zitadel)
- [Clerk vs Okta Auth0](https://cybersectools.com/compare/okta-auth0-vs-clerk)
- [Clerk vs FusionAuth](https://cybersectools.com/compare/clerk-vs-fusionauth-security)
- [Protectimus MFA for ADFS vs ZITADEL](https://cybersectools.com/compare/protectimus-mfa-for-adfs-vs-zitadel)
- [Protectimus MFA for ADFS vs Okta Auth0](https://cybersectools.com/compare/okta-auth0-vs-protectimus-mfa-for-adfs)
- [Protectimus MFA for ADFS vs FusionAuth](https://cybersectools.com/compare/fusionauth-security-vs-protectimus-mfa-for-adfs)

## Alternatives to each

- [See all Clerk alternatives](https://cybersectools.com/alternatives/clerk)
- [See all Protectimus MFA for ADFS alternatives](https://cybersectools.com/alternatives/protectimus-mfa-for-adfs)

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Source: https://cybersectools.com/compare/clerk-vs-protectimus-mfa-for-adfs

For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/clerk.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on Clerk and Protectimus MFA for ADFS: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md