PostGIS

Atlas

Browser-based GIS with an AI assistant for building maps, spatial analyses, and team workflows.

Alternative to Google Maps Platform

CARTO

Cloud-based platform for spatial data science and location intelligence analytics.

Alternative to ArcGIS

deegree

OSS

Java framework for spatial data infrastructures and OGC web services.

Alternative to ArcGIS

Felt

Collaborative browser-based GIS for building maps from live data, with spatial SQL and AI.

Alternative to ArcGIS, Google Maps Platform

GeoDjango

OSS

Django's geographic web framework for spatial models, queries, and GIS web apps.

GeoNetwork

OSS

Catalog application for publishing and searching spatial data and service metadata.

QGIS Server

OSS

Open-source map server for publishing QGIS projects through OGC web services.

Alternative to ArcGIS

Nominatim

OSS

Open-source geocoding with OpenStreetMap data. Powers search on openstreetmap.org.

Alternative to Google Maps Platform, HERE Technologies

Martin

OSS

Blazing fast and lightweight PostGIS, MBtiles and PMtiles tile server written in Rust.

Alternative to Mapbox

Mapnik

OSS

C++ cartographic rendering library for maps and tiles from geospatial data sources.

OpenMapTiles

OSS

Open vector tile schema and Docker toolchain for self-hosted OSM basemaps.

Alternative to Mapbox, Google Maps Platform

GeoNode

OSS

Open-source web platform for managing, publishing, and sharing geospatial data.

Alternative to ArcGIS

osm2pgsql

OSS

Import OpenStreetMap data into a PostgreSQL/PostGIS database for map rendering and analysis.

Tegola

OSS

Fast Mapbox Vector Tile server written in Go with PostGIS and GeoPackage support.

Alternative to Mapbox

pgRouting

OSS

Routing algorithms — Dijkstra, A*, TSP, VRP — as SQL functions inside PostGIS.

Alternative to HERE Technologies, TomTom

MapServer

OSS

Open-source platform for publishing spatial data and interactive maps to the web.

Alternative to ArcGIS