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Head-to-head · Passwordless Authentication Software

Mosaic by Transmit Security vs Clerk

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score Mosaic by Transmit Security #6 in Passwordless Authentication Software 8.5/10 Pricing on request ✓ 5 of 5 features Visit site
Clerk #8 in Passwordless Authentication Software 8.3/10 Free plan Free plan✓ 1 of 5 features Visit Clerk

Mosaic by Transmit Security leads on 0 checks, Clerk on 1, and 5 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreMosaic by Transmit Security · 8.5/10
  • Free planonly Clerk
  • Most featuresMosaic by Transmit Security · 5 of 5

Mosaic by Transmit Security scores higher on our rubric for passwordless authentication software: 8.5 against 8.3 out of 10; our editors rank them #6 and #8.

Clerk offers free plan; Mosaic by Transmit Security doesn't.

Mosaic by Transmit Security is the better fit for large enterprises needing fraud-aware identity. Clerk is the better fit for product teams needing polished auth components.

  • Mosaic by Transmit Security fits best

    Large enterprises needing fraud-aware identity

  • Clerk fits best

    Product teams needing polished auth components

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Side by side

Feature Mosaic by Transmit Security 8.5/10 Visit ↗ Clerk 8.3/10 Visit ↗
At a glance
Editor score 8.5 8.3
Ranking #6 in Passwordless Authentication Software #8 in Passwordless Authentication Software
Best for Large enterprises needing fraud-aware identity Product teams needing polished auth components
Pricing model Paid Free plan + paid
Starting price — $20/mo
Free plan — ✓ (best)
Free trial — —
Deployment Cloud Cloud, Mobile, Browser extension
Platforms Web, iOS, Android Web, iOS, Android, Chrome extension
Integrations 4 integrations 12 integrations
Features Mosaic by Transmit Security 5/5 · Clerk 1/5
Magic links ✓ (best) Not checked yet
Biometric login ✓ (best) Not checked yet
SAML SSO ✓ (best) Not checked yet
OpenID Connect ✓ (best) Not checked yet
Directory synchronization ✓ ✓
Specs
Passwordless methods passkeys, biometrics, magic links, SMS OTP, social logins, push notifications, PIN, TOTP Not checked yet
Our review
Pros
  • Supports passkeys, biometrics, magic links, OTPs, and social login
  • Combines authentication, orchestration, fraud detection, and verification
  • Provides SAML, OIDC, SCIM, APIs, SDKs, web, and mobile support
  • Prebuilt sign-up, sign-in, profile, and account-management components
  • Passkeys, MFA, SSO, directory sync, and lifecycle provisioning
  • Web, iOS, Android, Chrome extension, API, and broad integrations
Cons
  • Pricing requires a tailored sales quote
  • There is no free plan
  • Its broad enterprise scope may exceed narrower authentication needs
  • Usage is metered by monthly retained users per application
  • Hobby fixes session lifetime at seven days
  • Business starts at $250 per month, billed annually
Our verdict

Mosaic by Transmit Security is a cloud-based identity security platform for enterprises such as banks, insurers, healthcare providers, retailers, and other organizations. It combines customer identity management, passwordless and…

Read the review →

Clerk provides authentication and user management for teams building consumer, B2B, and multi-tenant applications. Its prebuilt sign-up, sign-in, profile, and account-management components are aimed at product teams that want polished auth…

Read the review →
  1. Mosaic by Transmit SecurityPasswordless Authentication Software 8.5Pricing on request
  2. ClerkPasswordless Authentication Software 8.3Free plan

Strengths and trade-offs

  • Mosaic by Transmit Security — where it wins

    • Supports passkeys, biometrics, magic links, OTPs, and social login
    • Combines authentication, orchestration, fraud detection, and verification
    • Provides SAML, OIDC, SCIM, APIs, SDKs, web, and mobile support

    Where it doesn't

    • Pricing requires a tailored sales quote
    • There is no free plan
    • Its broad enterprise scope may exceed narrower authentication needs

  • Clerk — where it wins

    • Prebuilt sign-up, sign-in, profile, and account-management components
    • Passkeys, MFA, SSO, directory sync, and lifecycle provisioning
    • Web, iOS, Android, Chrome extension, API, and broad integrations

    Where it doesn't

    • Usage is metered by monthly retained users per application
    • Hobby fixes session lifetime at seven days
    • Business starts at $250 per month, billed annually
  • Mosaic by Transmit Security8.5/10 · Pricing on request

    A broad identity platform for enterprises that need authentication, orchestration, and fraud controls.

    Visit siteFull verdict →
  • Clerk8.3/10 · Free plan

    A broad authentication toolkit with polished components, passkeys, MFA, and organization support.

    Visit ClerkFull verdict →

More comparisons

All passwordless authentication software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update