Directory

8 tools

Observable, Inc. · Data visualization

Modular JavaScript library for bespoke, data-driven web graphics: scales, axes, shapes, layouts, geo projections, transitions and DOM selections

ISCOpen sourceFreeLocalNov 2, 2026

GeoPandas developers (NumFOCUS affiliated) · GIS & mapping

Python library extending pandas with geometry columns, spatial operations, reprojection, spatial joins and file I/O for vector geodata

BSD-3-ClauseOpen sourceFreeLocalNov 2, 2026

Uber Technologies (open-source project) · GIS & mapping

Hexagonal hierarchical geospatial indexing system from Uber with a C core and bindings for Python, JavaScript, Java and SQL engines

Apache-2.0Open sourceFreeLocalNov 2, 2026

Volodymyr Agafonkin and contributors · GIS & mapping

Lightweight open-source JavaScript library for interactive tile-based web maps with markers, vector layers and a large plugin ecosystem

BSD-2-ClauseOpen sourceFreeLocalNov 2, 2026

MapLibre Organization · GIS & mapping

Open-source vector-tile map renderers for web (GL JS) and native platforms, forked from Mapbox GL and governed by a community organisation

BSD-3-ClauseOpen sourceFreeLocalSelf-hostedNov 2, 2026

PostGIS Project Steering Committee (OSGeo) · GIS & mapping

Spatial extension for PostgreSQL adding geometry, geography and raster types with indexing and hundreds of SQL functions

GPL-2.0-or-laterOpen sourceFreeSelf-hostedNov 2, 2026

PostgreSQL Global Development Group · Relational databases

Open-source object-relational database server with a large extension ecosystem (PostGIS, pgvector, TimescaleDB) and broad SQL coverage

PostgreSQLOpen sourceFreeLocalSelf-hostedBroken

QGIS.org association · GIS & mapping

Open-source desktop GIS for viewing, editing, analysing and publishing vector and raster geodata, extensible with Python plugins

GPL-2.0-or-laterOpen sourceFreeLocalBroken

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