
Serverless Web Maps
Using SQLite in the Browser and Service Workers to Power Web Maps from Object Storage

Generating Cloud Optimized GeoTIFFs and Raster Tiles with GDAL
TLDR: gdalbuildvrt, gdal_translate, gdal_warp and gdaladdo

Exporting AGOL Feature Services to GeoJSON
Using NodeJS and Batches to Transform an ArcGIS Online Feature Service to GeoJSON

Tilequery
A tool to query remote vector tiles and return GeoJSON features, limiting to an optional buffer.

Agol Cache
A NodeJS script to download all layers within a public or protected ArcGIS Online Feature or Map Service as GeoJSON.

Gpx Visualize
A site that visualizes GPS tracks over a simple map with an elevation chart overlay.

Network Tracing with Turf JS
A Client Side Solution for Simple Upstream and Downstream Linear Network Analysis

Pwa Maps
A presentation on using OpenMapTiles and service workers to turn an interactive map into an offline-capable Progressive Web App.

Leaflet Store Locator
A responsive open source store locator built with Leaflet and Bootstrap and based on the original Mapbox JS example.

Parcel Viewer
Open Parcel Viewer - A mobile ready web app for displaying 50k parcels or polygons without needing a GIS server.

Animating Urban Growth via the ArcMap Time Slider
One Hundred Years of Urban Growth in Ten Seconds