The GIS stack,
mapped.

AntV L7

OSS

WebGL library for large-scale 2D and 3D geospatial visualization in web applications.

Apache ECharts

OSS

JavaScript visualization library with interactive charts, maps, and geographic data components.

Apache Sedona

OSS

Distributed spatial processing engine for large-scale vector and raster data with spatial SQL.

ArcGIS

Esri's comprehensive GIS platform for mapping, spatial analysis, and data management.

Atlas

Modern collaborative mapping platform for teams. Create, share, and analyze maps together.

Alternative to Google Maps Platform

CARTO

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

Alternative to ArcGIS

CesiumJS

OSS

Open-source JavaScript library for world-class 3D globes and maps with WebGL.

Alternative to Google Earth

deck.gl

OSS

WebGL-powered framework for visual exploratory data analysis of large datasets.

Entwine

OSS

Lossless point-cloud organization library and CLI for building spatially indexed EPT datasets.

eo-learn

OSS

Python framework for modular Earth-observation processing workflows.

EODAG

OSS

Unified Python API and CLI for searching and downloading Earth observation products.

Felt

Collaborative web-based mapping platform. Create beautiful maps together in your browser.

Alternative to ArcGIS, Google Maps Platform

Fiona

OSS

Pythonic file I/O for geospatial vector data, wrapping GDAL/OGR.

GraphHopper

OSS

Fast and memory-efficient routing engine for OpenStreetMap with many vehicle profiles.

Alternative to HERE Technologies, TomTom, Google Maps Platform

H3

OSS

Uber's hexagonal hierarchical geospatial indexing system for efficient spatial analysis.

GDAL

OSS

Translator library for raster and vector geospatial data formats. The Swiss Army knife of GIS.

FlatGeobuf

OSS

Binary geospatial vector format with fast streaming via HTTP range requests.

gdal3.js

OSS

WebAssembly build of GDAL and OGR for geospatial processing in browsers and Node.js.

geemap

OSS

Python package for interactive geospatial analysis and visualization with Google Earth Engine.

GeoDjango

OSS

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

GeoMesa

OSS

Distributed spatio-temporal storage and query suite for geospatial data.

GeoNode

OSS

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

Alternative to ArcGIS

MapLibre GL JS

OSS

Open-source TypeScript library for publishing maps on your website. Fast vector tile rendering.

Alternative to Mapbox, Google Maps Platform, Bing Maps

GeoPandas

OSS

Python library extending pandas to allow spatial operations on geometric types.

Alternative to ArcGIS

geopy

OSS

Python client library for forward and reverse geocoding services.

GEOS

OSS

C/C++ computational geometry library powering PostGIS, Shapely and QGIS.

GeoServer

OSS

Open-source server for sharing geospatial data. Supports WMS, WFS, WCS, and more.

Alternative to ArcGIS, Mapbox

geotiff.js

OSS

Browser and Node.js library for parsing GeoTIFF files for visualization and analysis.

GeoTools

OSS

Open-source Java GIS toolkit for geospatial formats, standards, and services.

GeoWebCache

OSS

Java tile cache for accelerating WMS, WMTS, and other map tile services.

GRASS GIS

OSS

Free, open-source GIS software for geospatial data management, analysis, and visualization.

Alternative to ArcGIS

H2GIS

OSS

Spatial extension for H2 with OGC-compatible spatial SQL and analysis tools.

HERE

Location platform with mapping, routing, and location services for enterprise applications.

Imposm

OSS

Fast OpenStreetMap importer that writes PostGIS databases.

iTowns

OSS

Three.js and WebGL framework for visualizing 2D and 3D geospatial data.

JSTS

OSS

JavaScript port of the JTS topology suite for 2D spatial predicates and operations.

Leaflet

OSS

Leading open-source JavaScript library for mobile-friendly interactive maps. Simple and lightweight.

Alternative to Google Maps Platform, Bing Maps, Mapbox

kepler.gl

OSS

Powerful open-source geospatial analysis tool for large-scale datasets. Built by Uber.

Koop

OSS

JavaScript toolkit for serving transformed geospatial data through web mapping APIs.

Leaflet-Geoman

OSS

Leaflet plugin for drawing, editing, measuring, and managing geometry layers.

libpostal

OSS

C library for parsing and normalizing international street addresses with statistical NLP.

Mapbender

OSS

Open-source WebGIS framework for building map applications without code.

Mapbox

Maps and location platform for developers. Includes GL JS, Studio, and navigation APIs.

Mapbox GL Draw

OSS

Drawing tools plugin for MapLibre/Mapbox GL maps — points, lines, polygons.

MapLibre Native

OSS

Open-source native mapping engine for vector maps across mobile, desktop, and embedded platforms.

MapLibre-Geoman

OSS

MapLibre plugin for drawing, measuring, and editing geometry layers in web maps.

Mapnik

OSS

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

MapServer

OSS

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

Alternative to ArcGIS

mapshaper

OSS

Editor for Shapefile, GeoJSON and TopoJSON — simplify, clip and convert in the browser.

maptalks.js

OSS

Extensible JavaScript library for integrated 2D and 3D mapping.

MapTiler

Map hosting platform with beautiful styles, vector tiles, and easy integration.

Alternative to Mapbox, Google Maps Platform

Mapv

OSS

Canvas-based JavaScript library for visualizing large geospatial point, line, and polygon datasets.

Martin

OSS

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

Alternative to Mapbox

morecantile

OSS

Python library for constructing and using OGC tile matrix sets beyond Web Mercator.

MySQL Spatial

OSS

Spatial types, indexes and functions built into MySQL and MariaDB.

OpenLayers

OSS

High-performance, feature-packed library for creating interactive maps on the web.

Alternative to Google Maps Platform, Bing Maps

Nominatim

OSS

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

Alternative to Google Maps Platform, HERE Technologies

OpenDroneMap

OSS

Open-source CLI for turning aerial imagery into orthophotos, point clouds, DEMs, and 3D models.

OpenGlobus

OSS

WebGL engine for interactive 3D globes, terrain, and geospatial data at planetary scale.

Alternative to Google Earth

OpenMapTiles

OSS

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

Alternative to Mapbox, Google Maps Platform

openrouteservice

OSS

Open-source routing API with directions, isochrones, and matrix services built on OpenStreetMap data.

Alternative to Google Maps Platform, HERE Technologies, TomTom

Orfeo ToolBox

OSS

Open-source toolkit for large-scale optical, multispectral, and radar imagery processing.

Shapely

OSS

Python library for manipulation and analysis of planar geometric objects.

Protomaps

OSS

Free, open-source map of the world deployable as a single static file (PMTiles).

Alternative to Mapbox, Google Maps Platform

PostGIS

OSS

Spatial database extender for PostgreSQL. Adds support for geographic objects and spatial queries.

Alternative to ArcGIS

Planetiler

OSS

Fast tool for generating planet-scale vector tiles from OpenStreetMap in hours, not days.

Alternative to Mapbox

osm2pgsql

OSS

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

Osmium

OSS

Fast and flexible C++ library and command-line tool for working with OpenStreetMap data.

OSMnx

OSS

Python package for downloading, modeling, analyzing, and visualizing OpenStreetMap networks.

OSRM

OSS

High-performance routing engine designed to run on OpenStreetMap data.

Alternative to HERE Technologies, TomTom, Google Maps Platform

overpass turbo

OSS

Web-based GUI for writing, testing, and visualizing OpenStreetMap Overpass queries.

OWSLib

OSS

Python toolkit for clients of OGC and OGC API web services.

PDAL

OSS

Point cloud data abstraction library and CLI for translating, filtering, and processing LiDAR.

Pelias

OSS

Open-source geocoder using data from OpenStreetMap, OpenAddresses, and more.

Alternative to Google Maps Platform, HERE Technologies

pgRouting

OSS

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

Alternative to HERE Technologies, TomTom

Photon

OSS

Low-latency forward and reverse geocoder for OpenStreetMap data.

Alternative to Google Maps Platform, HERE Technologies

PROJ

OSS

Generic coordinate transformation library for converting between different CRS.

Proj4js

OSS

JavaScript library for reprojecting coordinates between coordinate systems, including datum transformations.

pycsw

OSS

Python OGC API and CSW server for publishing and discovering geospatial metadata.

pygeoapi

OSS

Python server implementation of the OGC API suite for publishing geospatial data.

pyproj

OSS

Python interface to PROJ for coordinate reference systems, transformations, and geodesy.

PyWPS

OSS

Python implementation of the OGC Web Processing Service standard.

QGIS

OSS

Free and open-source cross-platform desktop GIS. Create, edit, visualize, analyze and publish geospatial data.

Alternative to ArcGIS, MapInfo Pro

QGIS Server

OSS

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

Alternative to ArcGIS

QuackOSM

OSS

Python library and CLI for reading OpenStreetMap PBF data into GeoParquet with DuckDB.

Raster Vision

OSS

Open-source Python framework for deep learning on satellite and aerial imagery.

Rasterio

OSS

Python library for reading and writing geospatial raster datasets using GDAL.

Alternative to Google Earth Engine

React Leaflet

React component bindings for building interactive Leaflet maps.

react-map-gl

OSS

React components for building map apps with MapLibre GL JS or Mapbox GL JS.

rio-cogeo

OSS

Rasterio plugin for creating and validating Cloud-Optimized GeoTIFFs.

rio-tiler

OSS

Python library for generating map tiles and reading raster data from GDAL-supported sources.

S2 Geometry

OSS

Google's spherical geometry library with hierarchical cell indexing.

Spatial extension for SQLite — a full spatial database in a single file.

Stadia Maps

Hosted basemaps, geocoding and routing APIs built on open data.

Alternative to Mapbox, Google Maps Platform

Supercluster

OSS

Fast JavaScript library for clustering large GeoJSON point datasets in browsers and Node.js.

Tegola

OSS

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

Alternative to Mapbox

TerriaJS

OSS

Library for building catalog-driven 2D and 3D web geospatial explorers.

Alternative to Google Earth

Tile38

OSS

In-memory geospatial database and geofencing server for indexed location data.

tilemaker

OSS

Build vector tiles from OpenStreetMap with a single command — no database needed.

Turf.js

OSS

Advanced geospatial analysis library for browsers and Node.js. Modular and fast.

Alternative to ArcGIS

Valhalla

OSS

Open-source routing engine with turn-by-turn navigation and isochrone generation.

Alternative to HERE Technologies, TomTom, Google Maps Platform

Tippecanoe

OSS

Build vector tilesets from large collections of GeoJSON features. Essential for tile generation.

Alternative to Mapbox

TiTiler

OSS

Dynamic raster tile server for Cloud-Optimized GeoTIFFs and STAC items.

TomTom

Commercial location APIs for routing, traffic, geocoding and maps.

Xarray

OSS

N-dimensional labeled arrays in Python — the standard for netCDF and raster cubes.