mbloch/mapshaper

Javascript implementation of zip for nodejs with support for electron original-fs. Allows user to create or extract zip files both in memory or to/from disk

the complete solution for node.js command-line programs

Color spaces! RGB, HSL, Cubehelix, Lab and HCL (Lch).

Interpolate numbers, colors, strings, arrays, objects, whatever!

High performance (de)compression in an 8kB package

Convert character encodings in pure javascript.

browser-side require() the node way

simple, flexible, fun test framework

quote and parse shell commands

JavaScript's functional programming helper library.

convert KML and GPX to GeoJSON

A pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module.

Sequential, diverging and categorical color schemes.

An incredibly fast JavaScript library for Delaunay triangulation of 2D points

Fast static spatial index for rectangles

A super-simple-small keyval store built on top of IndexedDB

A very fast static 2D index for points based on kd-tree.

Ultra-fast MessagePack implementation with extensions for records and structured cloning

A JavaScript port of the Proj.4 cartographic projections library

Now stdin and stdout are files.

Make synchronous web requests

The smallest and simplest JavaScript priority queue

csv test data for writing robust csv parsers

Canada neighbourhood data with crawler

Node web services and example front end to convert a collection of ESRI shapefiles into a complete administrative geography; e.g USA, states, counties, census tracts, census block groups into TopoJSON tiles optimised for a series to map zoomlevels. Typically zoomlevels 6-11 are supported. The web services contain a very simple tile server for testing; the user then downloads the tiles for deploying a OSM 'standard' style compliant map server

Pre-built TopoJSON from Ecuador

Programme d'etl pour importer les données necessaires pour suivre l'évolution des mailles géographique français depuis 2019

Static geo Atlas

Pre-built TopoJSON from Latin America