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Cybersecurity · head to head

Infisical vs Keil MDK

Infisical logo

Infisical

Cybersecurity

Security infrastructure for developers and AI agents

From
Free
Rated
-
Full reviewWebsite
Keil MDK logo

Keil MDK

Developer Tools

Microcontroller Development Kit for Arm-based devices

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Infisical free tier limited to 5 identities, suitable only for small teams or evaluation; Keil MDK pricing for Essential and Professional subscriptions not disclosed on primary site

Where they differ

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

Attributes where Infisical and Keil MDK differ
AttributeInfisicalKeil MDK
Pricing modelUnknownfreemium
PlatformsWeb, CLI, Cloud, Self-HostedWeb
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 Infisical

  • Secrets management
  • Certificate management
  • Privileged access management
  • Secret versioning
  • Dynamic secrets
  • SAML SSO
  • Open-source core
  • Secrets scanning

Only in Keil MDK

Nothing recorded that Infisical does not also cover.

What people use each for

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

Infisical

  • Managing secrets across Kubernetes clustersnot Keil MDK
  • Automating certificate lifecycle for internal PKInot Keil MDK
  • Providing privileged database access with audit trailsnot Keil MDK
  • Securing credentials for AI agents at runtimenot Keil MDK

Keil MDK

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

Where each one falls short

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

Infisical

  • Free tier limited to 5 identities, suitable only for small teams or evaluation
  • Pricing tiers are per-identity, which scales costs with team size
  • Certificate management requires Enterprise plan for advanced features like wildcards
  • Privileged access tier is separate billing from secrets management

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

Infisical

Free
  • FreeFree
    • 5 identities
    • Unlimited projects
    • 3 environments
  • Pro - Secrets$20/month
    • Per-identity pricing
    • Unlimited identities
    • SAML SSO
  • Pro - Secrets (Annual)$20/year
    • Annual discount available
    • Unlimited identities
    • SAML SSO
  • Advanced - Secrets$40/month
    • Per-identity pricing
    • Dynamic secrets
    • Gateways

Keil MDK

Free

No published plan breakdown. See the Keil MDK review.

Which should you pick?

Choose Infisical if

  • You need secrets management.
  • You want to start without paying.
  • You work on Web, CLI, Cloud, Self-Hosted.
  • You also want certificate management.
Infisical review

Choose Keil MDK if

  • You want to start without paying.
Keil MDK review

Questions people ask

Is Infisical or Keil MDK better?
Neither clearly leads. Infisical 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, Infisical or Keil MDK?
Infisical starts at Free and Keil MDK at Free.
Does Infisical or Keil MDK run on more platforms?
Infisical runs on Web, CLI, Cloud, Self-Hosted. Keil MDK runs on Web.
Can I use Infisical for free?
Both have a free tier, so you can try either at no cost before committing.
What is Infisical best used for?
Infisical is most often used for managing secrets across kubernetes clusters, automating certificate lifecycle for internal pki, providing privileged database access with audit trails, securing credentials for ai agents at runtime. Of those, managing secrets across kubernetes clusters and automating certificate lifecycle for internal pki are not what Keil MDK is typically brought in for.
What can Infisical do that Keil MDK cannot?
Infisical covers Secrets management, Certificate management, Privileged access management, Secret versioning.

Answered from the vendors’ own pages

Infisical: How is pricing calculated for Secrets Management?

Pricing is per-identity per month. Free tier includes 5 identities. Pro tier is $20/identity/month, Advanced is $40/identity/month. All pricing in USD.

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
Infisical: Can I self-host Infisical?

Yes, Infisical's core is open-source under the MIT license and can be self-hosted. The managed cloud service is also available with additional features.

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
Infisical: What is included in the Enterprise plan?

Enterprise plan includes SCIM, LDAP, approval workflows, external KMS/HSM support, and 99.99% SLA. Pricing is custom and determined by annual commitment.

Source
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