Softwr

Maps · head to head

Lonboard vs SAGA GIS

Lonboard logo

Lonboard

Maps

Python map rendering in Jupyter that skips GeoJSON and moves millions of features without choking

From
Free
Rated
-
Full reviewWebsite
SAGA GIS logo

SAGA GIS

Maps

Open source terrain and geoscientific analysis with no vendor and no support contract available

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Lonboard it is a notebook visualisation library, not a mapping application, so there is no editing, no layout, no map export for print and no sharing beyond distributing the notebook or an HTML file; SAGA GIS there is no commercial support contract available from anyone, so a procurement process that requires a named supplier with a service level cannot be satisfied and the organisation carries the whole operational risk itself
  • They diverge on capability: Lonboard covers GeoArrow binary transfer, SAGA GIS covers Terrain morphometry.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Lonboard and SAGA GIS actually diverge.

Attributes where Lonboard and SAGA GIS differ
AttributeLonboardSAGA GIS
PlatformsLinux, macOS, WindowsWindows, Linux, macOS

Identical on both: starting price (Free), pricing model (Open source, no licence fee), free tier (Yes), 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 Lonboard

  • GeoArrow binary transfer
  • GeoPandas input
  • deck.gl layers
  • Jupyter widget
  • Large dataset handling
  • Styling by attribute
  • Open source licence

Only in SAGA GIS

  • Terrain morphometry
  • Hydrological modelling
  • Geostatistics
  • Image analysis
  • Module library
  • QGIS integration
  • Python and R bindings

What people use each for

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

Lonboard

  • An analyst exploring a national road or parcel dataset in a notebook where pydeck or ipyleaflet becomes unusable at that sizenot SAGA GIS
  • A researcher publishing a reproducible analysis where the visualisation must run from the same script as the processingnot SAGA GIS
  • A data scientist joining spatial data to model outputs in pandas and needing to see the result immediately without exporting to a GISnot SAGA GIS
  • A team building an internal analysis pipeline on GeoParquet that wants rendering without a serialisation step in the middlenot SAGA GIS

SAGA GIS

  • A hydrologist deriving catchment boundaries and flow networks from a national elevation model at a resolution commercial tools slow down onnot Lonboard
  • A soil science team producing interpolated property surfaces with documented geostatistical methods for a peer-reviewed papernot Lonboard
  • A government environmental analyst who needs a terrain index that no commercial GIS implements and does not want to write it from scratchnot Lonboard
  • A QGIS user who has hit the limits of the native toolbox and needs the SAGA algorithms already exposed in the processing frameworknot Lonboard

Where each one falls short

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

Lonboard

  • It is a notebook visualisation library, not a mapping application, so there is no editing, no layout, no map export for print and no sharing beyond distributing the notebook or an HTML file
  • Maintenance sits with Development Seed as an open source side output of a consultancy, so roadmap priorities follow client projects and there is no support contract to buy
  • Layer coverage is a subset of deck.gl, so an analyst needing a less common layer type has to drop to pydeck or write JavaScript rather than staying in Python
  • It expects data already in GeoPandas or Arrow form, which means the performance benefit depends on the rest of your pipeline being Arrow-friendly; reading a large Shapefile is still the slow step
  • Rendering happens in the browser, so very large datasets are ultimately limited by the client machine's memory and GPU rather than by the server, and a laptop will still fail on data a workstation handles

SAGA GIS

  • There is no commercial support contract available from anyone, so a procurement process that requires a named supplier with a service level cannot be satisfied and the organisation carries the whole operational risk itself
  • The project explicitly states that everyone working on it has another job and that answers may take a while, which means an urgent production failure has no escalation path
  • The interface is dated and inconsistent across modules, and cartographic output is poor, so most users treat it as an analysis engine and produce maps somewhere else
  • Documentation for many of the several hundred modules is a parameter list without explanation of method or expected input, so choosing the right algorithm often requires reading the source or a published paper
  • Development is concentrated in a small group, which creates real key-person risk: a change in the circumstances of a handful of maintainers would slow or stop releases, and there is no organisation obliged to continue them

Pricing, plan by plan

Lonboard

Free
  • LonboardFree
    • Open source, no licence fee
    • No usage limits
    • Installed from PyPI or conda

SAGA GIS

Free
  • SAGA GISFree
    • GNU General Public Licence
    • No licence fee and no usage limits
    • No commercial support contract exists

Which should you pick?

Choose Lonboard if

  • You need geoarrow binary transfer.
  • You want to start without paying.
  • You work on Linux, macOS, Windows.
  • You also want geopandas input.
Lonboard review

Choose SAGA GIS if

  • You need terrain morphometry.
  • You want to start without paying.
  • You work on Windows, Linux, macOS.
  • You also want hydrological modelling.
SAGA GIS review

Questions people ask

Is Lonboard or SAGA GIS better?
Neither clearly leads. Lonboard starts at Free and SAGA GIS at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Lonboard or SAGA GIS?
Lonboard starts at Free and SAGA GIS at Free.
Does Lonboard or SAGA GIS run on more platforms?
Lonboard runs on Linux, macOS, Windows. SAGA GIS runs on Windows, Linux, macOS.
Can I use Lonboard for free?
Both have a free tier, so you can try either at no cost before committing.
What is Lonboard best used for?
Lonboard is most often used for an analyst exploring a national road or parcel dataset in a notebook where pydeck or ipyleaflet becomes unusable at that size, a researcher publishing a reproducible analysis where the visualisation must run from the same script as the processing, a data scientist joining spatial data to model outputs in pandas and needing to see the result immediately without exporting to a gis, a team building an internal analysis pipeline on geoparquet that wants rendering without a serialisation step in the middle. Of those, an analyst exploring a national road or parcel dataset in a notebook where pydeck or ipyleaflet becomes unusable at that size and a researcher publishing a reproducible analysis where the visualisation must run from the same script as the processing are not what SAGA GIS is typically brought in for.
What can Lonboard do that SAGA GIS cannot?
Lonboard covers GeoArrow binary transfer, GeoPandas input, deck.gl layers, Jupyter widget. SAGA GIS covers Terrain morphometry, Hydrological modelling, Geostatistics, Image analysis.

Answered from the vendors’ own pages

Lonboard: Why not just use pydeck?

pydeck serialises geometry to GeoJSON to reach the browser. Lonboard uses a binary GeoArrow pipeline, which is the reason it handles far larger datasets in the same notebook.

SAGA GIS: Who maintains SAGA GIS?

A small international developer community, originating from physical geography departments at the universities of Göttingen and Hamburg. It is hosted on SourceForge and releases continue in the 9.x line.

Lonboard: Who maintains it?

Development Seed, a geospatial engineering consultancy, as an open source project. There is no commercial support offering.

SAGA GIS: Can I buy support?

No. There is no vendor and no commercial support contract. The project itself states there is no hotline and no guaranteed support.

Lonboard: Does it work outside Jupyter?

It is built as a Jupyter widget. Exporting to standalone HTML is possible, but the intended environment is a notebook.

SAGA GIS: Do I need SAGA if I already run QGIS?

Often not, because many SAGA algorithms are available through the QGIS processing toolbox. Install SAGA directly when you need modules QGIS does not expose or want to script them independently.

Lonboard: Is it free for commercial use?

Yes, it is open source with no licence fee.

SAGA GIS: What licence is it under?

The GNU General Public Licence, so you can modify and redistribute it under the same terms.

Share

Related pages

More on Lonboard

More on SAGA GIS

Keep looking

Other head to heads