Node.js

CesiumJS

OSS

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

Alternative to Google Earth

geotiff.js

OSS

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

mapshaper

OSS

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

OSRM

OSS

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

Alternative to HERE Technologies, TomTom, Google Maps Platform

Pelias

OSS

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

Alternative to Google Maps Platform, HERE Technologies

Proj4js

OSS

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

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