DQ Gouvernement du Québec — Ministère des Ressources naturelles et des Forêts · Open & public data
Québec's shared open-data portal where provincial ministries and municipalities publish datasets under a Creative Commons Attribution licence
O OpenStreetMap Foundation · GIS & mapping
In-depth entry Collaboratively edited world map database released under the ODbL, with planet files, an editing API and derived tiles and extracts
ODbL-1.0 Free Self-hosted Nov 2, 2026OA Roland Olbricht and the OpenStreetMap community · GIS & mapping
Read-only query service for OpenStreetMap data using the Overpass QL language, available on public instances or self-hosted
AGPL-3.0-only Free Open source Self-hosted Nov 2, 2026P PostGIS Project Steering Committee (OSGeo) · GIS & mapping
In-depth entry Spatial extension for PostgreSQL adding geometry, geography and raster types with indexing and hundreds of SQL functions
GPL-2.0-or-later Open source Free Self-hosted Nov 2, 2026P PostgreSQL Global Development Group · Relational databases
In-depth entry Open-source object-relational database server with a large extension ecosystem (PostGIS, pgvector, TimescaleDB) and broad SQL coverage
PostgreSQL Open source Free Local Self-hosted BrokenRD Gouvernement du Québec — Ministère des Affaires municipales et de l'Habitation · Real estate valuation & property data
In-depth entry Québec's municipal property assessment rolls: per-unit values and building attributes published by municipalities and as open data by the MAMH
SC Statistics Canada (Government of Canada) · Open & public data
In-depth entry Canada's national statistical agency publishing census, economic and social data tables with open licensing and programmatic access via Web Data Service
Proprietary Free Nov 2, 2026