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Testing · head to head

Insomnia vs Keil MDK

Insomnia logo

Insomnia

Testing

REST and GraphQL API client for development and testing

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: Insomnia git Sync on the free tier covers up to 3 users only; Keil MDK pricing for Essential and Professional subscriptions not disclosed on primary site

Where they differ

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

Attributes where Insomnia and Keil MDK differ
AttributeInsomniaKeil MDK
PlatformsWindows, MacOS, Linux, WebWeb
CategoryTestingDeveloper Tools
Founded2010Unknown

Identical on both: starting price (Free), pricing model (freemium), 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 Insomnia

  • REST API Client
  • GraphQL Support
  • gRPC Support
  • GitHub
  • GitLab
  • Slack
  • Windows support
  • MacOS support

Only in Keil MDK

Nothing recorded that Insomnia does not also cover.

What people use each for

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

Insomnia

  • Sending and debugging HTTP, GraphQL and gRPC requestsnot Keil MDK
  • Storing collections in Git rather than a vendor cloudnot Keil MDK
  • Mocking an API endpoint before it existsnot Keil MDK
  • Running collections in CI with the Inso CLInot Keil MDK
  • Environment management across staging and productionnot Keil MDK

Keil MDK

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

Where each one falls short

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

Insomnia

  • Git Sync on the free tier covers up to 3 users only
  • Mock servers are capped at 1,000 requests a month on free, then $10 per 25,000
  • Role-based access control requires Pro at $12 per user per month
  • SSO, SCIM and vault integrations are Enterprise only at $45 per user per month
  • Working without an account is limited to the local-only Scratch Pad

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

Insomnia

Free
  • EssentialsFree
    • unlimited Cloud/Local projects
    • up to 3 users with Git Sync
    • 1,000 mock server requests/month
  • Pro$12/user/month
    • unlimited users with Git Sync access
    • unlimited organizations
    • role-based access control
  • Enterprise$45/user/month
    • Kong Konnect integration
    • SSO (SAML/OIDC)
    • SCIM provisioning

Keil MDK

Free

No published plan breakdown. See the Keil MDK review.

Which should you pick?

Choose Insomnia if

  • You need rest api client.
  • You want to start without paying.
  • You work on Windows, MacOS, Linux, Web.
  • You also want graphql support.
Insomnia review

Choose Keil MDK if

  • You want to start without paying.
Keil MDK review

Questions people ask

Is Insomnia or Keil MDK better?
Neither clearly leads. Insomnia 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, Insomnia or Keil MDK?
Insomnia starts at Free and Keil MDK at Free.
Does Insomnia or Keil MDK run on more platforms?
Insomnia runs on Windows, MacOS, Linux, Web. Keil MDK runs on Web.
Can I use Insomnia for free?
Both have a free tier, so you can try either at no cost before committing.
What is Insomnia best used for?
Insomnia is most often used for sending and debugging http, graphql and grpc requests, storing collections in git rather than a vendor cloud, mocking an api endpoint before it exists, running collections in ci with the inso cli. Of those, sending and debugging http, graphql and grpc requests and storing collections in git rather than a vendor cloud are not what Keil MDK is typically brought in for.
What can Insomnia do that Keil MDK cannot?
Insomnia covers REST API Client, GraphQL Support, gRPC Support, GitHub.

Answered from the vendors’ own pages

Insomnia: How much does Insomnia cost?

Insomnia offers a free Essentials plan. Pro plans cost $12 per user per month with annual billing offering 17% savings. Enterprise plans cost $45 per user per month with support for up to 50 users self-serve; contact sales for larger teams.

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
Insomnia: Is there a free version of Insomnia?

Yes, the Essentials plan is free and includes unlimited Cloud and Local projects, Git Sync for up to 3 users, 1,000 mock server requests per month, Inso CLI, E2EE, custom linting, plugins, and AI 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
Insomnia: What mock server request limits apply to Insomnia plans?

Essentials includes 1,000 mock server requests per month. Pro includes 10,000 requests per month. Enterprise includes unlimited mock server requests. Additional mock server requests beyond plan allowances cost $10 per 25,000 requests.

Source
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