Libraries · head to head
Leafmap vs Libby

Leafmap
Libraries
Python package for interactive geospatial mapping and analysis inside Jupyter notebooks
- From
- Free
- Rated
- -

Libby
Libraries
Free ebook and audiobook app from OverDrive, gated entirely on an active public library card
- From
- Free
- Rated
- -
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.; Libby popular and new titles are frequently unavailable for weeks or months due to holds queues, which makes it unreliable for reading something the day you want to start it.
- They diverge on capability: Leafmap covers Multiple mapping backends, Libby covers Library card authentication.
- Prices and features above were last checked on 1 September 2026.
Where they differ
Only the attributes on which Leafmap and Libby actually diverge.
Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Libraries).
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 Libby
- Library card authentication
- Holds queues
- Multi-library support
- OverDrive Read and Listen
- Send to Kindle
- Tags and shelves
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 Libby
- A researcher exploring STAC-hosted satellite imagery inside a notebook before committing to a processing pipelinenot Libby
- An analyst producing a shareable interactive map from a GeoDataFrame in a handful of linesnot Libby
- A team prototyping a geospatial visualisation before deciding whether to build it properly in a web frameworknot Libby
Libby
- A reader who wants free access to bestsellers and is willing to wait weeks in a holds queue for popular new releasesnot Leafmap
- Someone who holds cards for multiple library systems and wants to widen their available catalogue in one appnot Leafmap
- A reader who wants ebooks sent directly to a Kindle without buying themnot Leafmap
- A budget-conscious reader who already pays library taxes and wants to use the benefit fully instead of also paying for Everand or Storytelnot 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.
Libby
- Popular and new titles are frequently unavailable for weeks or months due to holds queues, which makes it unreliable for reading something the day you want to start it.
- Borrow and hold limits are set per library, so the experience is inconsistent between library systems and can change without notice.
- Not every library subscribes to OverDrive, and even those that do vary hugely in how many digital copies of any given title they can afford to licence.
- It requires a real library card tied to residency or another eligibility rule in most systems, so it is not available to everyone regardless of willingness to pay.
- There is no offline bulk downloading beyond what is borrowed, and loan periods expire automatically, returning the book whether or not you finished it.
Pricing, plan by plan
Leafmap
Free- LeafmapFree
- MIT licence
- Installed from PyPI or conda-forge
- No usage limits
Libby
Free- LibbyFree
- Free with an eligible library card
- Borrow limits set by your library, not Libby
- Holds queues on licensed copies
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.
Choose Libby if
- You need library card authentication.
- You want to start without paying.
- You work on iOS, Android, Web, Kindle (for ebooks).
- You also want holds queues.
Questions people ask
- Is Leafmap or Libby better?
- Neither clearly leads. Leafmap starts at Free and Libby at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Leafmap or Libby?
- Leafmap starts at Free and Libby at Free.
- Does Leafmap or Libby run on more platforms?
- Leafmap runs on Linux, Windows, macOS. Libby runs on iOS, Android, Web, Kindle (for ebooks).
- 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 Libby is typically brought in for.
- What can Leafmap do that Libby cannot?
- Leafmap covers Multiple mapping backends, Notebook interactivity, Raster and COG support, STAC catalogue access. Libby covers Library card authentication, Holds queues, Multi-library support, OverDrive Read and Listen.
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.
Libby: Do I pay for Libby?
No, it is free, but you need an active card from a library that uses the OverDrive/Libby system.
Leafmap: Who maintains it?
Primarily Qiusheng Wu at the University of Tennessee, with community contributors, funded through research grants rather than sales.
Libby: Why is the book I want unavailable?
Libraries licence a limited number of digital copies, so popular titles go into a holds queue just like physical books.
Leafmap: Can I buy support?
No commercial support offering exists. Help comes from GitHub issues and the community.
Libby: Can I use Libby without a library card?
No, a valid card and PIN from a participating library are required for every feature.
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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