# qgis/QGIS

QGIS is a free, open source, cross platform (lin/win/mac) geographical information system (GIS)

Repository: https://github.com/qgis/QGIS
Canonical: https://ross.abutalabs.com/products/qgis
Homepage: https://qgis.org
Language: C++
License: GPL-2.0
License Family: copyleft
Last push: 2026-08-27T00:04:56+00:00

## Health v2 (maintenance only)
Score: 98/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 95, longevity 100
- inputs: {"age_days": 5602, "days_push": 7, "days_rel": 33, "gap_med": 0, "n_releases_24m": 46}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 14288, forks 3502 (observed 2026-08-28T04:11:06.678415+00:00)

## What it is
QGIS is a free, open-source, cross-platform desktop Geographical Information System (GIS) for viewing, editing, analyzing, and sharing spatial data. It supports hundreds of raster, vector, mesh, and point-cloud formats, professional cartography, geospatial analysis, and extensibility via Python plugins and a companion QGIS Server.

## Use cases
- create and edit maps from shapefiles and GeoPackage data
- analyze geospatial data with processing tools
- convert between GIS file formats like GeoTIFF and PostGIS
- design print-quality cartographic layouts and atlases
- view and edit raster, vector, mesh, and point cloud layers
- build custom geospatial workflows with Python plugins
- publish maps as web services with QGIS Server

## When to choose
- you need a full-featured free desktop GIS on Windows, macOS, or Linux
- you work with many spatial data formats and need interoperability
- you want professional map production and spatial analysis without licensing costs
- you need a scriptable, plugin-extensible GIS platform

## When to avoid
- you only need lightweight web map embedding rather than a desktop application
- you need a headless spatial data library for a small pipeline (GDAL/OGR or PostGIS may suffice)
- you require a purely mobile field-collection app as the primary tool

## Facets
- artifact type: application
- maturity: stable
- function: gui, geospatial, data-visualization, image-processing, plugin-system
- domain: data-visualization, cross-platform
- platform: windows, cross-platform, python, cpp
- tags: gis, cartography, spatial-analysis, qgis-server, pyqgis, osgeo, maps, geospatial, linux, macos, desktop

## Member repositories
- qgis/QGIS (main) score 98

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:06.678415+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:12:40.319798+00:00, confidence not recorded.
  - readme: https://github.com/qgis/QGIS (fetched 2026-08-28T04:11:06.678415+00:00, sha ea86282c40a1)
  - homepage: https://qgis.org (fetched 2026-08-29T08:06:21.096202+00:00, sha 87490e9a8051)
  - site_page: https://docs.qgis.org/latest/en/docs/user_manual/index.html (fetched 2026-08-29T08:06:21.102477+00:00, sha b0dfab3efe08)
  - site_page: https://qgis.org/resources/installation-guide (fetched 2026-08-29T08:06:21.108518+00:00, sha f44979dd0843)
  - site_page: https://qgis.org/project/visual-changelogs/visualchangelog42 (fetched 2026-08-29T08:06:21.099188+00:00, sha 3573ce88abff)
  - site_page: https://qgis.org/project/visual-changelogs (fetched 2026-08-29T08:06:21.104451+00:00, sha c7fc99260fea)
  - site_page: https://qgis.org/resources/hub (fetched 2026-08-29T08:06:21.106396+00:00, sha d5d43b5f7eab)
- Data as of 2026-08-30T08:39:29.467469+00:00.