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Maps · head to head

Correlator3D vs Leaflet

Correlator3D logo

Correlator3D

Maps

SimActive photogrammetry with a published price list and a perpetual licence still on sale

From
$295/month
Rated
-
Full reviewWebsite
Leaflet logo

Leaflet

Maps

Leading open-source JavaScript library for mobile-friendly interactive maps, used by millions of developers worldwide

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Leaflet has a free tier, so it costs nothing to try first.
  • Each has a real cost: Correlator3D the standard licence caps at 61 megapixel sensors, so an operator moving to a medium or large format camera has to buy a different and separately quoted licence rather than paying an upgrade fee.; Leaflet 2D only with no support for 3D features, tilt, or rotation
  • They diverge on capability: Correlator3D covers Aerial triangulation, Leaflet covers Core Functionality.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Correlator3D and Leaflet actually diverge.

Attributes where Correlator3D and Leaflet differ
AttributeCorrelator3DLeaflet
Starting price$295/monthFree
Pricing modelOne-time purchaseUnknown
Free tierNoYes
PlatformsWindowsWeb

Identical on both: user rating (Not yet rated), category (Maps).

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 Correlator3D

  • Aerial triangulation
  • DSM and DTM generation
  • Orthomosaic production
  • Point cloud and 3D mesh output
  • Feature extraction
  • GPU acceleration
  • Satellite imagery support
  • Batch and unattended processing

Only in Leaflet

  • Core Functionality
  • User Interface

What people use each for

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

Correlator3D

  • An aerial survey company processing large photographic blocks where per-project cloud credits would be more expensive than owning a licencenot Leaflet
  • A national or regional mapping agency that needs software it can run offline on classified or restricted imagerynot Leaflet
  • A drone service provider producing bare-earth terrain models for volumetrics and corridor mapping at high throughputnot Leaflet
  • An organisation that wants a perpetual licence because a multi-year subscription cannot be justified against its capital budgeting rulesnot Leaflet

Leaflet

  • Embedding interactive maps in a web pagenot Correlator3D
  • Mobile-friendly map interfaces across desktop and mobile browsersnot Correlator3D
  • Mapping where bundle size matters, at roughly 42 KB of JavaScriptnot Correlator3D
  • Extending a basic map with plugins rather than adopting a full platformnot Correlator3D

Where each one falls short

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

Correlator3D

  • The standard licence caps at 61 megapixel sensors, so an operator moving to a medium or large format camera has to buy a different and separately quoted licence rather than paying an upgrade fee.
  • It is Windows desktop only with no cloud processing option, so throughput is bounded by the workstation and GPU you buy, and there is no way to burst capacity for one large job.
  • There is no collaboration layer, client portal or field application, so deliverable sharing, review and version control all have to be handled by other software.
  • The interface and workflow are built for photogrammetry specialists; an occasional drone operator will find the learning curve steeper than a consumer-oriented mapping package.
  • The perpetual licence includes only one year of support and updates, and staying current afterwards means paying maintenance, so the headline $5,900 is not the whole long-term cost.

Leaflet

  • 2D only with no support for 3D features, tilt, or rotation
  • Performance degrades when rendering large datasets of complex vector geometries without optimization
  • Limited dynamic styling support; style is fixed on the server when using raster tiles
  • Lacks native support for WMS features; requires plugins like Leaflet.WMS and complex feature identification is cumbersome
  • Requires external tile service for map imagery; does not provide map tiles natively

Pricing, plan by plan

Correlator3D

$295/month
  • Monthly subscription$295/month
    • Unlimited images
    • Sensors up to 61 megapixels
    • All modules and tools
  • Yearly subscription$2950/year
    • Unlimited images
    • Sensors up to 61 megapixels
    • All modules and tools
  • Permanent licence$5900/one-time
    • Perpetual licence
    • Unlimited images up to 61 megapixels
    • All modules and tools
  • Permanent floating licence$6400/one-time
    • Perpetual floating licence shared across machines
    • Unlimited images up to 61 megapixels
    • One year of support and updates included

Leaflet

Free

No published plan breakdown. See the Leaflet review.

Which should you pick?

Choose Correlator3D if

  • You need aerial triangulation.
  • You work on Windows.
  • You also want dsm and dtm generation.
Correlator3D review

Choose Leaflet if

  • You need core functionality.
  • You want to start without paying.
  • You also want user interface.
Leaflet review

Questions people ask

Is Correlator3D or Leaflet better?
Neither clearly leads. Correlator3D starts at $295/month and Leaflet at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Correlator3D or Leaflet?
Leaflet has a free tier; the other does not. Paid plans start at $295/month for Correlator3D and Free for Leaflet.
Does Correlator3D or Leaflet run on more platforms?
Correlator3D runs on Windows. Leaflet runs on Web.
Can I use Leaflet for free?
Yes. Leaflet has a free tier, so you can try it without paying. Correlator3D starts at $295/month.
What is Correlator3D best used for?
Correlator3D is most often used for an aerial survey company processing large photographic blocks where per-project cloud credits would be more expensive than owning a licence, a national or regional mapping agency that needs software it can run offline on classified or restricted imagery, a drone service provider producing bare-earth terrain models for volumetrics and corridor mapping at high throughput, an organisation that wants a perpetual licence because a multi-year subscription cannot be justified against its capital budgeting rules. Of those, an aerial survey company processing large photographic blocks where per-project cloud credits would be more expensive than owning a licence and a national or regional mapping agency that needs software it can run offline on classified or restricted imagery are not what Leaflet is typically brought in for.
What can Correlator3D do that Leaflet cannot?
Correlator3D covers Aerial triangulation, DSM and DTM generation, Orthomosaic production, Point cloud and 3D mesh output. Leaflet covers Core Functionality, User Interface.

Answered from the vendors’ own pages

Correlator3D: Can I still buy a perpetual licence?

Yes. $5,900 for a permanent licence and $6,400 for a permanent floating licence, each including a year of support and updates.

Leaflet: Is Leaflet free and open source?

Yes. Leaflet is open-source JavaScript library licensed for free use. Over 400 plugins add capabilities like marker clustering, heatmaps, drawing tools, geocoding, and routing.

Source
Correlator3D: What limits the standard licence?

Sensor resolution, up to 61 megapixels. Medium format, large format and satellite imagery need separately priced licences.

Leaflet: How do I include Leaflet in my project via CDN?

Leaflet is available on multiple free CDNs including unpkg, cdnjs, and jsDelivr. Include the CSS stylesheet from https://unpkg.com/[email protected]/dist/leaflet.css and JavaScript from https://unpkg.com/[email protected]/dist/leaflet.js in your HTML head.

Source
Correlator3D: Is there a cloud version?

No. Processing runs on your own Windows workstation. SimActive offers a data processing service as an alternative to buying the software.

Leaflet: What mapping services does Leaflet support?

Leaflet integrates seamlessly with various mapping services including OpenStreetMap, Google Maps, Bing, and other custom tile providers, allowing developers to choose the best base layer.

Source
Correlator3D: Does it handle satellite imagery?

Yes, under a separate satellite licence class quoted on request.

Leaflet: What is the file size of Leaflet?

Leaflet weighs about 42 KB of JavaScript.

Source
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