nodejs

gdal3.js

OSS

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

geoblaze

OSS

Pure-JavaScript raster processing engine for GeoTIFFs in the browser and Node.js.

Turf.js

OSS

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

Alternative to ArcGIS

Mapnik

OSS

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

Koop

OSS

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