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Keil MDK vs WebStorm

Keil MDK logo

Keil MDK

Developer Tools

Microcontroller Development Kit for Arm-based devices

From
Free
Free plan
Yes
Full reviewWebsite
WebStorm logo

WebStorm

Technology

The JavaScript and TypeScript IDE

From
$12.9/month
Free plan
No
Full reviewWebsite

The short version

  • Only Keil MDK has a free tier, so it costs nothing to try first.
  • Each has a real cost: Keil MDK pricing for Essential and Professional subscriptions not disclosed on primary site; WebStorm jetBrains WebStorm is sold as an annual subscription rather than a one-time purchase: commercial price is $199 per year (USD), and personal price starts at $299 in year one, dropping to $239 in year two and $179 from year three onward with continuous renewal.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

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

Attributes where Keil MDK and WebStorm differ
AttributeKeil MDKWebStorm
Starting priceFree$12.9/month
Pricing modelfreemiumsubscription
Free tierYesNo
PlatformsWebWindows, Macos, Linux
CategoryDeveloper ToolsTechnology
FoundedUnknown2000

Identical on both: 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 Keil MDK

Nothing recorded that WebStorm does not also cover.

Only in WebStorm

  • Smart JavaScript editor
  • TypeScript support
  • Node.js development
  • Modern framework support
  • Built-in debugger
  • Unit testing
  • Version control
  • Live templates

What people use each for

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

Keil MDK

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

WebStorm

  • Web application developmentnot Keil MDK
  • React/Angular/Vue developmentnot Keil MDK
  • Node.js backend developmentnot Keil MDK
  • TypeScript projectsnot Keil MDK
  • Frontend testingnot 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

WebStorm

  • JetBrains WebStorm is sold as an annual subscription rather than a one-time purchase: commercial price is $199 per year (USD), and personal price starts at $299 in year one, dropping to $239 in year two and $179 from year three onward with continuous renewal.
  • If the subscription lapses, use of new versions stops; JetBrains grants a fallback license only for the last version used while the subscription was active, per its published buy page.

Pricing, plan by plan

Keil MDK

Free

No published plan breakdown. See the Keil MDK review.

WebStorm

$12.9/month
  • Individual$12.9/month
    • Intelligent JavaScript & TypeScript editor
    • Debugging and testing
    • VCS integration
  • Organizations$25.9/month
    • All Individual features
    • Commercial use license
    • Centralized license management

Which should you pick?

Choose Keil MDK if

  • You want to start without paying.
Keil MDK review

Choose WebStorm if

  • You need smart javascript editor.
  • You work on Windows, Macos, Linux.
  • You also want typescript support.
WebStorm review

Questions people ask

Is Keil MDK or WebStorm better?
Neither clearly leads. Keil MDK starts at Free and WebStorm at $12.9/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Keil MDK or WebStorm?
Keil MDK has a free tier; the other does not. Paid plans start at Free for Keil MDK and $12.9/month for WebStorm.
Does Keil MDK or WebStorm run on more platforms?
Keil MDK runs on Web. WebStorm runs on Windows, Macos, Linux.
Can I use Keil MDK for free?
Yes. Keil MDK has a free tier, so you can try it without paying. WebStorm starts at $12.9/month.
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 WebStorm is typically brought in for.
What can Keil MDK do that WebStorm cannot?
WebStorm covers Smart JavaScript editor, TypeScript support, Node.js development, Modern framework support.

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
WebStorm: Is there a free version of WebStorm?

Yes, WebStorm is free for non-commercial use and includes access to JetBrains AI with a free tier.

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
WebStorm: What is the cost of a commercial WebStorm license?

The page references a testimonial mentioning 70 euros as a cost, though specific current pricing requires visiting the dedicated pricing page.

Source
WebStorm: How does JetBrains AI licensing work?

Users can pay with JetBrains AI credits, bring their own AI subscriptions and API keys to avoid vendor lock-in, or use the free tier included with WebStorm.

Source
WebStorm: What features does the free tier include?

The free tier includes the smart code editor, navigation tools, integrated developer tools, and customization options.

Source
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