geojson

Fiona

OSS

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

Leaflet-Geoman

OSS

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

MapLibre-Geoman

OSS

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

mapshaper

OSS

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

pygeoapi

OSS

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

Supercluster

OSS

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

Turf.js

OSS

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

Alternative to ArcGIS

Tippecanoe

OSS

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

Alternative to Mapbox