awesome geojson 
GeoJSON utilities that will make your life easier.
operations
- geojson-coords: Extract coordinates from GeoJSON
- geojson-extent: compute the bounding box of geojson features
- geojson-flatten: flatten multi geometries into normal geometries
- geojson-multiply: merge normal geojson features into one multi geometry type feature
- geojson-js-utils: JavaScript helper functions for manipulating GeoJSON
- geojson-merge: Merge multiple GeoJSON files into one FeatureCollection.
- geojson-normalize: normalize any geojson object into a geojson featurecollection
- geojson-pick: remove all but specified properties from features in a geojson featurecollection
- geojson-random: generate random geojson points, lines, and polygons
- geojson-rewind: enforce ring winding order
- geojson-summary: get a plain-english summary of what's in a geojson file
- point-grouper: group geojson points into containing polygons
- geojson-join: join geojson against json, dbf, and csv files
- simplify-geojson: apply the ramer-douglas-peucker line simplification to geojson features or feature collections in JS or on the CLI
- turf: collection of functions for spatial operations and analysis
- winnow: run sql queries against geojson with javascript
editors & viewers
- geojson.io: web-based editor, supports many filetype imports & exports, operations, sharing via GitHub
- umap: web-based editor, supports sharing on-site
- simple geojson editor: geojson editor on a google map, by google
- mapstarter: helps generate svg, images, and code from GeoJSON
- gjv: electron app enables viewing GeoJSON locally and hack on it with turf; works offline
validation
- geojsonhint: find errors in your geojson files
services
- geojsonio-cli: send geojson features to geojson.io from your command line
- geojsonio-extension: chrome extension for editing github files in geojson.io
- geojsonlint: REST interface for GeoJSON validation
- mapshaper: Simple interface for simplification and conversion of GeoJSON and TopoJSON
- koop: Server with plugins that recast Esri, GitHub, Socrata and other services as GeoJSON endpoints
conversion
- csv2geojson: convert CSV to geojson
- geojson-mapnikify: Transform GeoJSON objects into Mapnik XML stylesheets with embedded GeoJSON data and simplestyle-spec-derived styles.
- geojson-vt: Slice GeoJSON into vector tiles on the fly in the browser
- geojson2dsv: convert geojson to csv and tsv
- geojson2rtree: generate a static rtree (using terraformer) from a set of geojson features
- ogr2ogr: convert anything to anything
- fiona: nice python interface on top of ogr
- minjur: converts OpenStreetMap data to GeoJSON faster than anything else
- shp2json: convert shapefile zip archives to streaming GeoJSON
- togeojson: convert gpx & kml to geojson
- tokml: convert geojson to KML
- topojson: convert GeoJSON to & from TopoJSON, join data from CSV
- vt-geojson: Extract GeoJSON from Mapbox vector tiles
- wellknown: convert wkt to geojson
- osmtogeojson: convert OpenStreetMap data to GeoJSON
- esri2open converts proprietary Esri formats to GeoJSON
- gtfs2geojson: convert GTFS transit data to GeoJSON
- geoxform: convert any size stream of geojson into a streaming csv, shapefile or kml, etc.
data
- natural earth: country, province, and geographical data
- geojson.xyz: natural earth data in web-friendly sizes with hotlinking
- world-atlas: customizable simplified versions of natural earth data
- openflights-geojson: openflights airports & airplane routes
- us-atlas: geojson & topojson for United States features
- metro-extracts: regional OpenStreetMap data as GeoJSON
- whereonearth-airport: outlines of every airport
- whereonearth-building: building outlines
- whereonearth repos: other features output from GeoPlanet by Aaron Straup Cope
- tgn-geojson: The Getty Thesaurus of Geographic Names (TGN) As GeoJSON.
- strava-to-geojsonio: export runs & rides from Strava to GeoJSON
- strava-geojson: export all strava data to geojson, in node & on the web
serialization
- python-geojson: serialize geojson to/from python datatypes
- rgeo-geojson: serialize geojson to/from ruby RGeo datatypes
- rust-geojson: serialize geojson to/from rust datatypes
resources
- GeoJSON.org: the specification, defining all the rules for GeoJSON structures
- More than you ever wanted to know about GeoJSON: a review of the concepts behind the specification in a more narrative format.
License
To the extent possible under law, Tom MacWright has waived all copyright and related or neighboring rights to this work.