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Maps · head to head

Leaflet vs OSRM

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
O

OSRM

Maps

High-performance open-source routing engine designed for OpenStreetMap data, providing fast route calculations

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Leaflet 2D only with no support for 3D features, tilt, or rotation; OSRM free and open source routing engine under the 2-clause BSD license, no commercial tier
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Leaflet and OSRM actually diverge.

Attributes where Leaflet and OSRM differ
AttributeLeafletOSRM
Pricing modelUnknownopen-source

Identical on both: starting price (Free), free tier (Yes), platforms (Web), 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 Leaflet

Nothing recorded that OSRM does not also cover.

Only in OSRM

Nothing recorded that Leaflet does not also cover.

Both cover

  • Core Functionality
  • User Interface

What people use each for

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

Leaflet

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

OSRM

  • Calculating efficient delivery routes across continental-sized road networks in millisecondsnot Leaflet
  • Building navigation features for mobile apps without constructing routing infrastructurenot Leaflet
  • Customizing route optimization for car, bicycle, and pedestrian transportation modesnot Leaflet
  • Integrating OpenStreetMap data for real-time routing in web applicationsnot Leaflet

Where each one falls short

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

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

OSRM

  • Free and open source routing engine under the 2-clause BSD license, no commercial tier

Pricing, plan by plan

Leaflet

Free

No published plan breakdown. See the Leaflet review.

OSRM

Free

No published plan breakdown. See the OSRM review.

Which should you pick?

Choose Leaflet if

  • You want to start without paying.
Leaflet review

Choose OSRM if

  • You want to start without paying.
OSRM review

Questions people ask

Is Leaflet or OSRM better?
Neither clearly leads. Leaflet starts at Free and OSRM at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Leaflet or OSRM?
Leaflet starts at Free and OSRM at Free.
Does Leaflet or OSRM run on more platforms?
Both run on Web, so platform support will not decide this one for you.
Can I use Leaflet for free?
Both have a free tier, so you can try either at no cost before committing.
What is Leaflet best used for?
Leaflet is most often used for embedding interactive maps in a web page, mobile-friendly map interfaces across desktop and mobile browsers, mapping where bundle size matters, at roughly 42 kb of javascript, extending a basic map with plugins rather than adopting a full platform. Of those, embedding interactive maps in a web page and mobile-friendly map interfaces across desktop and mobile browsers are not what OSRM is typically brought in for.

Answered from the vendors’ own pages

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
OSRM: How much does Project OSRM cost?

Project OSRM is completely free and open source, distributed under the permissive 2-clause BSD license with no licensing costs or fees.

Source
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
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
Leaflet: What is the file size of Leaflet?

Leaflet weighs about 42 KB of JavaScript.

Source
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