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Cybersecurity · head to head

Frontegg vs Keil MDK

Frontegg logo

Frontegg

Cybersecurity

Customer identity and access management platform for SaaS applications

From
Free
Free plan
Yes
Full reviewWebsite
Keil MDK logo

Keil MDK

Developer Tools

Microcontroller Development Kit for Arm-based devices

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Each has a real cost: Frontegg detailed per-unit pricing beyond the free tier is not published, requiring use of an online calculator or sales contact to estimate costs.; Keil MDK pricing for Essential and Professional subscriptions not disclosed on primary site
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Frontegg and Keil MDK actually diverge.

Attributes where Frontegg and Keil MDK differ
AttributeFronteggKeil MDK
Pricing modelusage-basedfreemium
Platformsweb, apiWeb
CategoryCybersecurityDeveloper Tools

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 Frontegg

  • Hosted login
  • Enterprise SSO/SCIM
  • Multi-tenant organizations
  • Custom domains
  • M2M tokens
  • Fraud protection

Only in Keil MDK

Nothing recorded that Frontegg does not also cover.

What people use each for

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

Frontegg

  • Adding enterprise SSO/SCIM to a B2B SaaS productnot Keil MDK
  • Multi-tenant customer identity managementnot Keil MDK
  • White-labeled, custom-domain login experiencesnot Keil MDK
  • Securing AI agent access to a SaaS product via Agen.conot Keil MDK

Keil MDK

  • Embedded software developmentnot Frontegg
  • ARM microcontroller programmingnot Frontegg
  • Professional development environmentsnot Frontegg

Where each one falls short

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

Frontegg

  • Detailed per-unit pricing beyond the free tier is not published, requiring use of an online calculator or sales contact to estimate costs.
  • Advanced fraud protection and multiple environments are Enterprise-only, unavailable on the Pay As You Go plan.
  • The 7,500 free monthly active users is comparatively modest next to some competitors' free tiers.
  • As a broader CIAM platform, it can be more complex to integrate than lighter-weight developer-first auth tools for smaller apps.

Keil MDK

  • Pricing for Essential and Professional subscriptions not disclosed on primary site
  • Customers must contact Arm Developer Tools store for subscription rates

Pricing, plan by plan

Frontegg

Free
  • Pay As You GoFree
    • 7,500 monthly active users included
    • 5 enterprise connections (SSO/SCIM)
    • Unlimited organizations
  • Enterprise$undefined/month
    • Custom pricing
    • Multiple environments
    • Advanced fraud protection

Keil MDK

Free

No published plan breakdown. See the Keil MDK review.

Which should you pick?

Choose Frontegg if

  • You need hosted login.
  • You want to start without paying.
  • You work on web, api.
  • You also want enterprise sso/scim.
Frontegg review

Choose Keil MDK if

  • You want to start without paying.
Keil MDK review

Questions people ask

Is Frontegg or Keil MDK better?
Neither clearly leads. Frontegg starts at Free and Keil MDK at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Frontegg or Keil MDK?
Frontegg starts at Free and Keil MDK at Free.
Does Frontegg or Keil MDK run on more platforms?
Frontegg runs on web, api. Keil MDK runs on Web.
Can I use Frontegg for free?
Both have a free tier, so you can try either at no cost before committing.
What is Frontegg best used for?
Frontegg is most often used for adding enterprise sso/scim to a b2b saas product, multi-tenant customer identity management, white-labeled, custom-domain login experiences, securing ai agent access to a saas product via agen.co. Of those, adding enterprise sso/scim to a b2b saas product and multi-tenant customer identity management are not what Keil MDK is typically brought in for.
What can Frontegg do that Keil MDK cannot?
Frontegg covers Hosted login, Enterprise SSO/SCIM, Multi-tenant organizations, Custom domains.

Answered from the vendors’ own pages

Frontegg: What does Frontegg cost?

Frontegg's Pay As You Go plan is free up to 7,500 monthly active users, after which pricing scales with users, enterprise connections and M2M tokens via an online calculator; Enterprise pricing is custom.

Source
Keil MDK: Does Keil MDK have a free version?

Yes, Keil MDK Community Edition is free for non-commercial projects. Essential and Professional editions are available as monthly or annual subscriptions.

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

Yes, the free Pay As You Go plan includes 7,500 monthly active users, 5 enterprise SSO/SCIM connections, unlimited organizations, and a custom domain.

Source
Keil MDK: How much do Keil MDK paid editions cost?

Specific pricing for Essential and Professional editions is not published on the main site. Rates are available from the Arm Developer Tools store or by contacting Arm sales.

Source
Frontegg: How is usage metered?

Pricing is consumption-based, driven by monthly active users, monthly enterprise connections (SSO/SCIM), and monthly M2M tokens, with customers paying only for usage beyond the free 7,500-user threshold.

Source
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