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GRASS GIS

GRASS GIS is ranked #5 of 62 in GIS software on Freedom251. It runs on API, Linux, macOS, Self-hosted, Web, Windows. There is a free plan.

GRASS GIS plans and pricing

GRASS GIS Free free and open source · GPL (>=v2) · no warranty grass.osgeo.org · 1 Oct 2026

Compared on GIS software

Free plan: Yes
Deployment: hybrid
Spatial analysis: advanced
Web mapping: Yes
Raster data support: Yes

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GRASS GIS

Purpose: GRASS is a computational engine for raster, vector and geospatial processing, including terrain, ecosystem, hydrology, data management and imagery work.
GIS modules: GRASS contains over 500 modules for processing and rendering geographic data.
Data formats: GRASS supports nearly all common GIS file formats through the GDAL-OGR library.
Analysis: Features include raster, 3D voxel, terrain, hydrological, vector, temporal, image-processing and spatial-statistics tools.
Interfaces: GRASS provides GUI, command-line, C API, Python, Jupyter Notebook and WPS interfaces.
Integrations: GRASS integrates with QGIS and R, and supports PostgreSQL and SQLite database interfaces.
Extensions: The official GRASS Addons repository has more than 300 extensions.
Platforms: Official downloads cover Linux, macOS and Windows, with Docker images and conda packages also available.
Containers: Official Docker images are published as osgeo/grass-gis with Alpine, Debian and Ubuntu variants.
Security: The roadmap commits to vulnerability detection tools, fixing reported security issues and maintaining CI workflows for standards compliance.
macOS security: The prebuilt macOS applications are signed and notarized.
Support: GRASS offers worldwide community support plus commercial consulting, training and custom-development services.
Governance: The Project Steering Committee guides direction, budget and governance under OSGeo, with NumFOCUS fiscal sponsorship.
Audience: GRASS is used by scientists, developers, researchers, government agencies, universities and private companies.
Price from: Free

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Where it ranks on Freedom251

Best GIS Software in 2026#5 of 62

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Sources

grass.osgeo.org· checked 1 Oct 2026
grass.osgeo.org/learn/overview/· checked 1 Oct 2026
grass.osgeo.org/download/· checked 1 Oct 2026
grass.osgeo.org/about/roadmap/· checked 1 Oct 2026
grass.osgeo.org/news/2025_02_11_mac_app_notarized/· checked 1 Oct 2026
grass.osgeo.org/support/· checked 1 Oct 2026
grass.osgeo.org/about/governance/· checked 1 Oct 2026
grass.osgeo.org/about/license/· checked 1 Oct 2026