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Libraries · head to head

Leafmap vs SolidJS

Leafmap logo

Leafmap

Libraries

Python package for interactive geospatial mapping and analysis inside Jupyter notebooks

From
Free
Rated
-
Full reviewWebsite
SolidJS logo

SolidJS

Web Development

Reactive JavaScript framework with no virtual DOM

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Leafmap it is a Python library rather than an application, so there is nothing to buy, nothing to install for a non-technical colleague and no interface outside a notebook environment.; SolidJS much smaller ecosystem than React, so many problems have no off-the-shelf library
  • They diverge on capability: Leafmap covers Multiple mapping backends, SolidJS covers No virtual DOM.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Leafmap and SolidJS actually diverge.

Attributes where Leafmap and SolidJS differ
AttributeLeafmapSolidJS
PlatformsLinux, Windows, macOSWeb
CategoryLibrariesWeb Development

Identical on both: starting price (Free), pricing model (Open source, no licence fee), 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 Leafmap

  • Multiple mapping backends
  • Notebook interactivity
  • Raster and COG support
  • STAC catalogue access
  • Earth Engine integration
  • Basemap library
  • Vector data handling
  • Split map comparison

Only in SolidJS

  • No virtual DOM
  • Components run once
  • JSX syntax
  • Small bundles

What people use each for

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

Leafmap

  • A remote sensing course where students need interactive maps without learning JavaScript or a desktop GISnot SolidJS
  • A researcher exploring STAC-hosted satellite imagery inside a notebook before committing to a processing pipelinenot SolidJS
  • An analyst producing a shareable interactive map from a GeoDataFrame in a handful of linesnot SolidJS
  • A team prototyping a geospatial visualisation before deciding whether to build it properly in a web frameworknot SolidJS

SolidJS

  • Interfaces where update performance is the binding constraintnot Leafmap
  • Teams comfortable with React syntax who want finer-grained reactivitynot Leafmap
  • Applications where bundle size directly affects the businessnot Leafmap

Where each one falls short

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

Leafmap

  • It is a Python library rather than an application, so there is nothing to buy, nothing to install for a non-technical colleague and no interface outside a notebook environment.
  • Maintenance rests largely on one academic maintainer with grant funding, which makes long-term continuity a real consideration for anything beyond research use.
  • The API has moved quickly across releases, so notebooks written against an older version can break on upgrade, which undermines reproducibility in exactly the research settings where it is popular.
  • It abstracts over several third-party backends, so a bug or a rendering limitation is often in ipyleaflet, folium or MapLibre rather than in Leafmap, and diagnosing it means understanding the layer underneath anyway.
  • Large datasets rendered through notebook widgets become slow or unresponsive, so it does not scale to the data volumes a dedicated tiling service or desktop GIS handles comfortably.

SolidJS

  • Much smaller ecosystem than React, so many problems have no off-the-shelf library
  • The React-like syntax is misleading: components run once, and React habits produce subtle bugs
  • Smaller hiring pool and fewer learning resources than the mainstream frameworks

Pricing, plan by plan

Leafmap

Free
  • LeafmapFree
    • MIT licence
    • Installed from PyPI or conda-forge
    • No usage limits

SolidJS

Free
  • SolidJSFree
    • Full library
    • Commercial use permitted
    • No usage limits

Which should you pick?

Choose Leafmap if

  • You need multiple mapping backends.
  • You want to start without paying.
  • You work on Linux, Windows, macOS.
  • You also want notebook interactivity.
Leafmap review

Choose SolidJS if

  • You need no virtual dom.
  • You want to start without paying.
  • You also want components run once.
SolidJS review

Questions people ask

Is Leafmap or SolidJS better?
Neither clearly leads. Leafmap starts at Free and SolidJS at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Leafmap or SolidJS?
Leafmap starts at Free and SolidJS at Free.
Does Leafmap or SolidJS run on more platforms?
Leafmap runs on Linux, Windows, macOS. SolidJS runs on Web.
Can I use Leafmap for free?
Both have a free tier, so you can try either at no cost before committing.
What is Leafmap best used for?
Leafmap is most often used for a remote sensing course where students need interactive maps without learning javascript or a desktop gis, a researcher exploring stac-hosted satellite imagery inside a notebook before committing to a processing pipeline, an analyst producing a shareable interactive map from a geodataframe in a handful of lines, a team prototyping a geospatial visualisation before deciding whether to build it properly in a web framework. Of those, a remote sensing course where students need interactive maps without learning javascript or a desktop gis and a researcher exploring stac-hosted satellite imagery inside a notebook before committing to a processing pipeline are not what SolidJS is typically brought in for.
What can Leafmap do that SolidJS cannot?
Leafmap covers Multiple mapping backends, Notebook interactivity, Raster and COG support, STAC catalogue access. SolidJS covers No virtual DOM, Components run once, JSX syntax, Small bundles.

Answered from the vendors’ own pages

Leafmap: Is Leafmap a product?

No. It is an MIT-licensed Python package installed from PyPI or conda-forge. There is nothing to purchase.

SolidJS: Is SolidJS free?

Yes, open source under the MIT licence.

Leafmap: Who maintains it?

Primarily Qiusheng Wu at the University of Tennessee, with community contributors, funded through research grants rather than sales.

SolidJS: Is SolidJS just React without the virtual DOM?

The syntax is similar but the model is not. Solid components run once and reactivity is fine-grained, so patterns that are correct in React can be wrong in Solid.

Leafmap: Can I buy support?

No commercial support offering exists. Help comes from GitHub issues and the community.

SolidJS: Why is SolidJS fast?

It compiles away much of the framework and updates individual DOM nodes directly, rather than re-rendering components and diffing a virtual DOM.

Leafmap: Is it suitable for a production web application?

It is not designed for that. Use it for analysis and prototyping, then build production maps on MapLibre, deck.gl or a hosted service.

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