GeoPandas
GeoPandas developers (NumFOCUS affiliated) · GIS & mapping
Python library extending pandas with geometry columns, spatial operations, reprojection, spatial joins and file I/O for vector geodata
BSD-3-ClauseOpen sourceFreeLocalNov 2, 2026
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OpenStreetMap
OpenStreetMap Foundation · GIS & mapping
Collaboratively edited world map database released under the ODbL, with planet files, an editing API and derived tiles and extracts
ODbL-1.0FreeSelf-hostedNov 2, 2026
PostGIS
PostGIS Project Steering Committee (OSGeo) · GIS & mapping
Spatial extension for PostgreSQL adding geometry, geography and raster types with indexing and hundreds of SQL functions
GPL-2.0-or-laterOpen sourceFreeSelf-hostedNov 2, 2026
QGIS
QGIS.org association · GIS & mapping
Open-source desktop GIS for viewing, editing, analysing and publishing vector and raster geodata, extensible with Python plugins
GPL-2.0-or-laterOpen sourceFreeLocalBroken
Rôle d'évaluation foncière (Québec)
Gouvernement du Québec — Ministère des Affaires municipales et de l'Habitation · Real estate valuation & property data
Québec's municipal property assessment rolls: per-unit values and building attributes published by municipalities and as open data by the MAMH
CC-BY-4.0FreeNov 2, 2026
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