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Developer Tools · head to head

Keil MDK vs Milestone XProtect

Keil MDK logo

Keil MDK

Developer Tools

Microcontroller Development Kit for Arm-based devices

From
Free
Free plan
Yes
Full reviewWebsite
Milestone XProtect logo

Milestone XProtect

Cybersecurity

Open platform video management software with perpetual per-device licences

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Each has a real cost: Keil MDK pricing for Essential and Professional subscriptions not disclosed on primary site; Milestone XProtect care Plus is presented as optional but is not in practice: without it, perpetual licences stop receiving version upgrades and eventually you cannot add a current camera because your frozen version does not support it.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Keil MDK and Milestone XProtect actually diverge.

Attributes where Keil MDK and Milestone XProtect differ
AttributeKeil MDKMilestone XProtect
Pricing modelfreemiumOne-time purchase per device licence, plus annual Care Plus
PlatformsWebWindows, Web, iOS, Android
CategoryDeveloper ToolsCybersecurity

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 Keil MDK

Nothing recorded that Milestone XProtect does not also cover.

Only in Milestone XProtect

  • Open device support
  • Perpetual device licences
  • Federated architecture
  • Failover recording
  • Evidence export
  • Smart Map
  • Integration platform
  • Video summarisation

What people use each for

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

Keil MDK

  • Embedded software developmentnot Milestone XProtect
  • ARM microcontroller programmingnot Milestone XProtect
  • Professional development environmentsnot Milestone XProtect

Milestone XProtect

  • A city or transport operator running tens of thousands of cameras across federated sitesnot Keil MDK
  • An enterprise with mixed legacy camera brands that refuses to standardise on one manufacturernot Keil MDK
  • A critical infrastructure site needing failover recording servers and tamper-evident evidence exportnot Keil MDK
  • An integrator building a bespoke security application on top of an open VMS platformnot 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

Milestone XProtect

  • Care Plus is presented as optional but is not in practice: without it, perpetual licences stop receiving version upgrades and eventually you cannot add a current camera because your frozen version does not support it.
  • Per-device licensing means multi-sensor and multi-imager cameras consume several licences each, so a headline camera count badly understates the true licence cost of a modern design.
  • It is Windows only for servers and needs a properly designed server and storage architecture, so the software price is a fraction of a project that also needs recording servers, storage and an integrator.
  • Complexity requires trained staff or a certified integrator; organisations that install it without either end up running a large deployment on default settings and never using the features they paid for.
  • Milestone retired Kite from its portfolio in favour of Arcules from January 2025, which stranded buyers who had standardised on Kite and is a reminder that the cloud side of the portfolio has changed direction more than once.

Pricing, plan by plan

Keil MDK

Free

No published plan breakdown. See the Keil MDK review.

Milestone XProtect

Free
  • XProtect Essential+Free
    • Free for up to 8 cameras
    • No recording time limit
    • No vendor support included
  • XProtect Express+$109/one-time
    • Perpetual device licence, distributor list price
    • Single site, single server
    • Care Plus purchased separately per device per year
  • XProtect Professional+$177/one-time
    • Perpetual device licence, distributor list price
    • Multiple recording servers
    • Edge storage retrieval
  • XProtect Expert$282/one-time
    • Perpetual device licence, distributor list price
    • Failover recording servers
    • Advanced video wall and evidence handling

Which should you pick?

Choose Keil MDK if

  • You want to start without paying.
Keil MDK review

Choose Milestone XProtect if

  • You need open device support.
  • You want to start without paying.
  • You work on Windows, Web, iOS, Android.
  • You also want perpetual device licences.
Milestone XProtect review

Questions people ask

Is Keil MDK or Milestone XProtect better?
Neither clearly leads. Keil MDK starts at Free and Milestone XProtect at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Keil MDK or Milestone XProtect?
Keil MDK starts at Free and Milestone XProtect at Free.
Does Keil MDK or Milestone XProtect run on more platforms?
Keil MDK runs on Web. Milestone XProtect runs on Windows, Web, iOS, Android.
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 Milestone XProtect is typically brought in for.
What can Keil MDK do that Milestone XProtect cannot?
Milestone XProtect covers Open device support, Perpetual device licences, Federated architecture, Failover recording.

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
Milestone XProtect: Is XProtect really free for small sites?

Essential+ is free for up to eight cameras with no recording time limit, but it comes with no vendor support and no multi-server capability.

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
Milestone XProtect: Are licences perpetual or annual?

Device licences are perpetual. The annual cost is Care Plus, the support and software update contract, which you need to stay on current versions.

Milestone XProtect: What happens if I do not renew Care Plus?

The system keeps recording, but you stop getting version upgrades, and over a few years that blocks you from adding newer cameras.

Milestone XProtect: Who owns Milestone?

Canon. The portfolio also includes BriefCam analytics and Arcules cloud video, with Arcules replacing Milestone Kite from January 2025.

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