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Developer Tools · head to head

Keil MDK vs Motorola Vigilant

Keil MDK logo

Keil MDK

Developer Tools

Microcontroller Development Kit for Arm-based devices

From
Free
Free plan
Yes
Full reviewWebsite
Motorola Vigilant logo

Motorola Vigilant

Cybersecurity

Fixed and mobile licence plate recognition with a shared law enforcement plate database

From
On request
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; Motorola Vigilant state law can decide eligibility outright: California's SB 34 imposes operator duties and restricts sharing ALPR data with out-of-state and federal agencies, and agencies have been audited and found non-compliant.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Keil MDK and Motorola Vigilant actually diverge.

Attributes where Keil MDK and Motorola Vigilant differ
AttributeKeil MDKMotorola Vigilant
Starting priceFreeOn request
Pricing modelfreemiumquote
Free tierYesNo
PlatformsWebWeb, Windows, iOS, Android
CategoryDeveloper ToolsCybersecurity

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 Motorola Vigilant does not also cover.

Only in Motorola Vigilant

  • Fixed LPR cameras
  • Mobile LPR
  • LEARN database
  • VehicleManager analytics
  • Hotlist alerting
  • Published API
  • Audit logging

What people use each for

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

Keil MDK

  • Embedded software developmentnot Motorola Vigilant
  • ARM microcontroller programmingnot Motorola Vigilant
  • Professional development environmentsnot Motorola Vigilant

Motorola Vigilant

  • A police department building a hotlist alerting network on arterial roads into a jurisdictionnot Keil MDK
  • An investigator reconstructing a suspect vehicle's movements across multiple agency jurisdictionsnot Keil MDK
  • A toll or parking authority enforcing against a registered vehicle listnot Keil MDK
  • A sheriff's office locating a vehicle associated with an active AMBER or missing person alertnot 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

Motorola Vigilant

  • State law can decide eligibility outright: California's SB 34 imposes operator duties and restricts sharing ALPR data with out-of-state and federal agencies, and agencies have been audited and found non-compliant.
  • Local surveillance technology ordinances increasingly require a published usage policy, retention limits and a public council hearing before purchase, which can add many months or block the procurement entirely.
  • Motorola has faced litigation over its dual role as ALPR operator and end user, so the legal exposure of the data-sharing model is unresolved and sits partly with the purchasing agency.
  • The value comes from the shared LEARN database, which means the capability an agency actually buys depends on what other agencies contribute, and that can shrink if peers withdraw for legal or political reasons.
  • Nothing is published on price, and camera hardware, database subscription and analytics are separate line items, so the multi-year total is far higher than the initial camera quote suggests.

Pricing, plan by plan

Keil MDK

Free

No published plan breakdown. See the Keil MDK review.

Motorola Vigilant

On request
  • Vigilant LPR$undefined/year
    • Fixed and mobile camera hardware quoted per unit
    • LEARN database access subscribed per agency
    • Analytics software licensed separately

Which should you pick?

Choose Keil MDK if

  • You want to start without paying.
Keil MDK review

Choose Motorola Vigilant if

  • You need fixed lpr cameras.
  • You work on Web, Windows, iOS, Android.
  • You also want mobile lpr.
Motorola Vigilant review

Questions people ask

Is Keil MDK or Motorola Vigilant better?
Neither clearly leads. Keil MDK starts at Free and Motorola Vigilant at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Keil MDK or Motorola Vigilant?
Keil MDK has a free tier; the other does not. Paid plans start at Free for Keil MDK and On request for Motorola Vigilant.
Does Keil MDK or Motorola Vigilant run on more platforms?
Keil MDK runs on Web. Motorola Vigilant runs on Web, Windows, iOS, Android.
Can I use Keil MDK for free?
Yes. Keil MDK has a free tier, so you can try it without paying. Motorola Vigilant starts at On request.
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 Motorola Vigilant is typically brought in for.
What can Keil MDK do that Motorola Vigilant cannot?
Motorola Vigilant covers Fixed LPR cameras, Mobile LPR, LEARN database, VehicleManager analytics.

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
Motorola Vigilant: What is LEARN?

The Law Enforcement Archival Reporting Network, the shared database where plate reads from subscribing agencies are stored and queried. It is the core of the product.

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
Motorola Vigilant: Can any agency buy it?

No. Several states restrict ALPR use and data sharing, and many municipalities require a published usage policy and a public hearing first. Check statute and local ordinance before budgeting.

Motorola Vigilant: Does California allow sharing with federal agencies?

SB 34 restricts sharing ALPR information with out-of-state and federal agencies, and California agencies have been audited on precisely that point.

Motorola Vigilant: Is it only for police?

No. Toll and parking authorities, and some commercial repossession and insurance operations, also use LPR, though the LEARN law enforcement network is agency restricted.

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