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Cybersecurity · head to head

Clerk vs Mozilla Firefox

Clerk logo

Clerk

Cybersecurity

Drop-in user authentication and management for developers

From
Free
Rated
-
Full reviewWebsite
Mozilla Firefox logo

Mozilla Firefox

Technology

Fast, private & safe web browser

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Clerk pricing scales with monthly retained users, which can grow expensive quickly for consumer apps with large user bases.; Mozilla Firefox no longer supported on Windows 8.1 and earlier versions (users must use Firefox ESR)
  • They diverge on capability: Clerk covers Prebuilt UI components, Mozilla Firefox covers Enhanced tracking protection.

Where they differ

Only the attributes on which Clerk and Mozilla Firefox actually diverge.

Attributes where Clerk and Mozilla Firefox differ
AttributeClerkMozilla Firefox
Pricing modelfreemiumUnknown
Platformsweb, ios, android, apiWindows, macOS, Linux, iOS, Android
CategoryCybersecurityTechnology
FoundedUnknown2004

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Clerk

  • Prebuilt UI components
  • Organization management
  • Multi-factor authentication
  • Social sign-on
  • Billing
  • Enterprise connections

Only in Mozilla Firefox

  • Enhanced tracking protection
  • Private browsing
  • Customizable interface
  • Add-ons support
  • Cross-device sync
  • Built-in screenshot tool
  • Reader mode
  • Picture-in-picture

What people use each for

The jobs each tool is most often brought in to do.

Clerk

  • Adding sign-in and user profiles to a web or mobile app quicklynot Mozilla Firefox
  • B2B SaaS apps needing organizations and role-based accessnot Mozilla Firefox
  • Startups wanting prebuilt UI instead of building auth in-housenot Mozilla Firefox
  • Apps needing MFA and fraud detection out of the boxnot Mozilla Firefox

Mozilla Firefox

  • Open-source web browser with privacy-focused designnot Clerk
  • Automatic tracking protection and ad blocking (2000+ data trackers blocked by default)not Clerk
  • Private browsing mode for anonymous web sessionsnot Clerk
  • Built-in password managernot Clerk
  • Multi-platform synchronisation across devicesnot Clerk
  • Developer tools and debugging capabilities for web developmentnot Clerk

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Clerk

  • Pricing scales with monthly retained users, which can grow expensive quickly for consumer apps with large user bases.
  • Enterprise SSO connections beyond the first are billed as add-ons, adding cost for larger organizations.
  • The Business tier's extra dashboard seats cost $20/month each, which adds up for larger teams.
  • Enterprise-tier features like the 99.99% uptime SLA require annual contracts rather than flexible monthly billing.

Mozilla Firefox

  • No longer supported on Windows 8.1 and earlier versions (users must use Firefox ESR)
  • No longer supported on macOS 10.14 and earlier versions (users must use Firefox ESR)

Pricing, plan by plan

Clerk

Free
  • HobbyFree
    • 50,000 MRU limit per app
    • Up to 3 dashboard seats
    • Unlimited applications
  • Pro$25/month
    • 50,000 MRUs included, $0.02/MRU overage
    • Up to 3 dashboard seats
    • 1 Enterprise Connection included
  • Business$300/month
    • 50,000 MRUs included with volume pricing
    • 10 dashboard seats included
    • SOC2 report and priority support
  • Enterprise$undefined/month
    • Custom pricing, annual billing
    • 99.99% uptime SLA
    • HIPAA available, dedicated Slack channel

Mozilla Firefox

Free

No published plan breakdown. See the Mozilla Firefox review.

Which should you pick?

Choose Clerk if

  • You need prebuilt ui components.
  • You want to start without paying.
  • You work on web, ios, android, api.
  • You also want organization management.
Clerk review

Choose Mozilla Firefox if

  • You need enhanced tracking protection.
  • You want to start without paying.
  • You work on Windows, macOS, Linux, iOS, Android.
  • You also want private browsing.
Mozilla Firefox review

Questions people ask

Is Clerk or Mozilla Firefox better?
Neither clearly leads. Clerk starts at Free and Mozilla Firefox at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Clerk or Mozilla Firefox?
Clerk starts at Free and Mozilla Firefox at Free.
Does Clerk or Mozilla Firefox run on more platforms?
Clerk runs on web, ios, android, api. Mozilla Firefox runs on Windows, macOS, Linux, iOS, Android.
Can I use Clerk for free?
Both have a free tier, so you can try either at no cost before committing.
What is Clerk best used for?
Clerk is most often used for adding sign-in and user profiles to a web or mobile app quickly, b2b saas apps needing organizations and role-based access, startups wanting prebuilt ui instead of building auth in-house, apps needing mfa and fraud detection out of the box. Of those, adding sign-in and user profiles to a web or mobile app quickly and b2b saas apps needing organizations and role-based access are not what Mozilla Firefox is typically brought in for.
What can Clerk do that Mozilla Firefox cannot?
Clerk covers Prebuilt UI components, Organization management, Multi-factor authentication, Social sign-on. Mozilla Firefox covers Enhanced tracking protection, Private browsing, Customizable interface, Add-ons support.

Answered from the vendors’ own pages

Clerk: What does Clerk cost?

Clerk's Hobby plan is free with a 50,000 MRU limit; Pro is $25/month ($20/month billed annually), Business is $300/month ($250 annually), and Enterprise uses custom annual pricing.

Source
Mozilla Firefox: How much does Firefox cost?

Firefox is free to download and use. No pricing tiers, subscriptions, or payment plans are offered for the standard browser.

Source
Clerk: Is there a free plan and what are its limits?

Yes, the Hobby plan is free with a 50,000 monthly retained user (MRU) limit per app, up to 3 dashboard seats, and unlimited applications, with no credit card required.

Source
Clerk: How is usage metered?

Clerk meters by monthly retained users (MRUs) — users who return to the app at least a day after signing up — with overage billed at $0.02 per MRU beyond the included 50,000 on paid plans.

Source
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