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Developer Tools · head to head

Keil MDK vs Penpot

Keil MDK logo

Keil MDK

Developer Tools

Microcontroller Development Kit for Arm-based devices

From
Free
Rated
-
Full reviewWebsite
Penpot logo

Penpot

Developer Tools

Open source design and prototyping platform

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Keil MDK pricing for Essential and Professional subscriptions not disclosed on primary site; Penpot smaller user base and community compared to Figma means fewer templates and resources
  • Prices and features above were last checked on 30 August 2026.

Where they differ

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

Attributes where Keil MDK and Penpot differ
AttributeKeil MDKPenpot
Pricing modelfreemiumUnknown
PlatformsWebWeb, Windows, macOS, Linux
FoundedUnknown2021

Identical on both: starting price (Free), free tier (Yes), 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 Keil MDK

Nothing recorded that Penpot does not also cover.

Only in Penpot

  • Vector editing
  • Interactive prototyping
  • Design systems
  • Components & libraries
  • Real-time collaboration
  • SVG support
  • CSS Grid & Flexbox
  • Code export

What people use each for

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

Keil MDK

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

Penpot

  • UI/UX designnot Keil MDK
  • Prototypingnot Keil MDK
  • Design systemsnot Keil MDK
  • Developer handoffnot Keil MDK
  • Open source projectsnot Keil MDK

Where each one falls short

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

Keil MDK

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

Penpot

  • Smaller user base and community compared to Figma means fewer templates and resources
  • Self-hosting requires Linux server and Docker knowledge for technical setup
  • Real-time collaboration features may have performance issues with very large design files

Pricing, plan by plan

Keil MDK

Free

No published plan breakdown. See the Keil MDK review.

Penpot

Free
  • FreeFree
    • Cloud-based design
    • Real-time collaboration
    • Components and variants
  • Unlimited$7/month
    • All free features
    • Priority support
    • Advanced cloud features
  • Enterprise$950/month
    • Custom enterprise features
    • Dedicated support
    • Advanced security

Which should you pick?

Choose Keil MDK if

  • You want to start without paying.
Keil MDK review

Choose Penpot if

  • You need vector editing.
  • You want to start without paying.
  • You work on Web, Windows, macOS, Linux.
  • You also want interactive prototyping.
Penpot review

Questions people ask

Is Keil MDK or Penpot better?
Neither clearly leads. Keil MDK starts at Free and Penpot at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Keil MDK or Penpot?
Keil MDK starts at Free and Penpot at Free.
Does Keil MDK or Penpot run on more platforms?
Keil MDK runs on Web. Penpot runs on Web, Windows, macOS, Linux.
Can I use Keil MDK for free?
Both have a free tier, so you can try either at no cost before committing.
What is Keil MDK best used for?
Keil MDK is most often used for embedded software development, arm microcontroller programming, professional development environments. Of those, embedded software development and arm microcontroller programming are not what Penpot is typically brought in for.
What can Keil MDK do that Penpot cannot?
Penpot covers Vector editing, Interactive prototyping, Design systems, Components & libraries.

Answered from the vendors’ own pages

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
Penpot: Is Penpot really free?

Yes. Penpot is completely free with no feature gates. The open-source version can be self-hosted on your own infrastructure for zero cost beyond server expenses.

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
Penpot: Can I self-host Penpot?

Yes. Penpot can be self-hosted on your own infrastructure with no licensing costs. Organizations with specific privacy or governance needs can run Penpot on their own servers.

Source
Penpot: What are the paid plans if I use Penpot cloud?

Penpot's cloud service offers a free tier, Unlimited plan at $7 per user per month for professionals and medium teams, and Enterprise starting at $950 per month for larger organizations.

Source
Penpot: What platforms does Penpot support?

Penpot runs in the browser, so it works on Windows, Mac, Linux, and any OS with a web browser. No platform-specific downloads required.

Source
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