16 open-source GIS & Geospatial vendors.

Open-source software for GIS & Geospatial that you can self-host, with auditable source code — regardless of the developer's headquarters.

• 52°NorthSelf-hosted / open source

  German research institute that develops open-source geospatial software

  Germany

• CamptocampSelf-hosted / open source

  Swiss company specialised in open-source GIS and geospatial web applications

  Switzerland

• GeoNodeSelf-hosted / open source

  Open-source platform for managing and publishing geospatial data and maps

  United States

• GeoServerSelf-hosted / open source

  Open-source server for sharing geospatial data via OGC standards such as WMS and WFS

  Italy

• GRASS GISSelf-hosted / open source

  Open-source GIS for advanced raster, vector and spatial analyses

  Italy

• lat/lonSelf-hosted / open source

  German company that develops the deegree open-source web services for INSPIRE directives

  Germany

• LeafletNon-EU vendor

  Lightweight open-source JavaScript library for mobile-friendly interactive maps

  Ukraine

• Lutra ConsultingSelf-hosted / open source

  UK-based QGIS specialist (registered office in Ashford, Kent, with an additional office in Slovakia — an EU location) providing QGIS core development, consulting, training and support, plus the proprietary Mergin Maps field-data platform built on open-source QGIS foundations. Confirmed active with training courses scheduled through late 2026. Note: HQ is UK (post-Brexit, non-EU), though it maintains an EU office in Slovakia.

  United Kingdom

• MapServerNon-EU vendor

  Open-source map server for publishing spatial data as map images

  United States

• OPENGIS.chSelf-hosted / open source

  Swiss open-source GIS specialist (Laax, with offices across Switzerland) developing QField and QFieldCloud for mobile field-data collection, alongside QGIS core development, custom development, training and support. Actively hiring and publishing in 2026, confirming ongoing operations.

  Switzerland

• OpenLayersSelf-hosted / open source

  Open-source JavaScript library for interactive maps in the web browser

  Germany

• OslandiaSelf-hosted / open source

  French SME (Paris/Lyon, founded 2009) specializing in open-source geospatial infrastructure: core contributor to QGIS, QGIS Server, PostGIS and 3D geospatial tools (SFCGAL, point-cloud visualization). OSGeo member providing consulting, development and support services on open-source GIS stacks.

  France

• PostGISNon-EU vendor

  Spatial extension for PostgreSQL for storing and processing geographic data

  Canada

• QGISSelf-hosted / open source

  Powerful open-source GIS for editing, analysing and publishing spatial data

  Switzerland

• terrestrisSelf-hosted / open source

  German GIS company specialised in open-source geospatial solutions

  Germany

• WhereGroupSelf-hosted / open source

  German company behind Mapbender, specialised in spatial data infrastructure

  Germany