Developer Tools · head to head
Cortex vs Keil MDK
Cortex
Developer Tools
Internal developer portal that scores service ownership and maturity rather than just cataloguing services
- From
- On request
- Rated
- -
Keil MDK
Developer Tools
Microcontroller Development Kit for Arm-based devices
- From
- Free
- Rated
- -
The short version
- Only Keil MDK has a free tier, so it costs nothing to try first.
- Each has a real cost: Cortex pricing is quote only, so a platform team cannot build a business case or compare against the true cost of self-hosted Backstage without entering a sales cycle first.; Keil MDK pricing for Essential and Professional subscriptions not disclosed on primary site
- Prices and features above were last checked on 31 August 2026.
Where they differ
Only the attributes on which Cortex and Keil MDK actually diverge.
Identical on both: user rating (Not yet rated), category (Developer Tools).
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 Cortex
- Service catalogue
- Scorecards
- Initiatives
- Self-service templates
- Query language
- Eng intelligence
- Integrations layer
- On-call and ownership mapping
Only in Keil MDK
Nothing recorded that Cortex does not also cover.
What people use each for
The jobs each tool is most often brought in to do.
Cortex
- A platform team that needs to prove to leadership how far a Kubernetes or framework migration has actually progressed across hundreds of servicesnot Keil MDK
- An organisation where ownership of production services is genuinely unknown after reorganisations or acquisitionsnot Keil MDK
- Enforcing production readiness standards on new services at creation time rather than at incident reviewnot Keil MDK
- Replacing a self-hosted Backstage that is consuming a full-time engineer or two just to stay upgradednot Keil MDK
Keil MDK
- Embedded software developmentnot Cortex
- ARM microcontroller programmingnot Cortex
- Professional development environmentsnot Cortex
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Cortex
- Pricing is quote only, so a platform team cannot build a business case or compare against the true cost of self-hosted Backstage without entering a sales cycle first.
- The catalogue is only as accurate as the metadata you supply, so an organisation with inconsistent repository conventions spends its first quarter cleaning data before any scorecard means anything.
- Scorecards create political friction: publishing a per-team grade turns an engineering standard into a performance metric, and teams will game the rules rather than fix the underlying issue.
- It is closed source and hosted, so organisations with strict data residency or air-gap requirements have limited options compared with running Backstage themselves.
- Value scales with organisation size, so a company with fifty engineers and thirty services will find the catalogue tells them nothing they did not already know while still paying an enterprise contract.
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
Cortex
On request- Cortex$undefined/year
- Service catalogue and ownership mapping
- Scorecards and initiatives
- Self-service templates
Keil MDK
FreeNo published plan breakdown. See the Keil MDK review.
Which should you pick?
Choose Cortex if
- You need service catalogue.
- You work on Web, API.
- You also want scorecards.
Questions people ask
- Is Cortex or Keil MDK better?
- Neither clearly leads. Cortex starts at On request and Keil MDK at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Cortex or Keil MDK?
- Keil MDK has a free tier; the other does not. Paid plans start at On request for Cortex and Free for Keil MDK.
- Does Cortex or Keil MDK run on more platforms?
- Cortex runs on Web, API. Keil MDK runs on Web.
- Can I use Keil MDK for free?
- Yes. Keil MDK has a free tier, so you can try it without paying. Cortex starts at On request.
- What is Cortex best used for?
- Cortex is most often used for a platform team that needs to prove to leadership how far a kubernetes or framework migration has actually progressed across hundreds of services, an organisation where ownership of production services is genuinely unknown after reorganisations or acquisitions, enforcing production readiness standards on new services at creation time rather than at incident review, replacing a self-hosted backstage that is consuming a full-time engineer or two just to stay upgraded. Of those, a platform team that needs to prove to leadership how far a kubernetes or framework migration has actually progressed across hundreds of services and an organisation where ownership of production services is genuinely unknown after reorganisations or acquisitions are not what Keil MDK is typically brought in for.
- What can Cortex do that Keil MDK cannot?
- Cortex covers Service catalogue, Scorecards, Initiatives, Self-service templates.
Answered from the vendors’ own pages
Cortex: How is Cortex different from Backstage?
Backstage is an open source framework you build and staff. Cortex is a hosted product with scorecards and initiatives out of the box and no platform team required to keep it running.
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.
SourceCortex: Is pricing published?
No. Cortex requires a sales conversation and prepares a custom proposal.
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.
SourceCortex: Can it self-host?
It is offered as a hosted product; on-premise arrangements are handled through sales rather than published.
Cortex: What is the main adoption risk?
Bad or missing service metadata. The catalogue and every scorecard on top of it inherit whatever quality your repositories already have.
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- Keil MDK vs OpsLevel
- Keil MDK vs Earthly
- Keil MDK vs Spacelift
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- Keil MDK vs Vite
- Keil MDK vs Bazel
- Keil MDK vs Namespace
- Keil MDK vs Nixpacks
- Keil MDK vs Octopus Deploy
- Keil MDK vs Okteto
- Keil MDK vs IAR Embedded Workbench
- Keil MDK vs CLion
- Keil MDK vs GNAT Pro
- Keil MDK vs Rust
- Keil MDK vs Visual Studio
- Keil MDK vs Penpot
- Keil MDK vs Ansible
- Keil MDK vs Helix
- Keil MDK vs Jitsu
- Keil MDK vs StackBlitz
- Keil MDK vs Yarn
- Keil MDK vs Buildkite
- Keil MDK vs JetBrains Rider