Planet API

Getting Started

Mapbox GL JS API

Active Fires in the US

Mapsmith

The United States: Her Natural and Industrial Resources

Natural Earth

Create an Area of Interest with GeoJSON

Explore the basics of the GeoJSON format, and learn to define an Area of Interest (AOI)

Planetary.js: Awesome interactive globes for the web

OpenStreetMap Wiki

Using GeoJSON with Leaflet

Leaflet - a JavaScript library for interactive maps

27 Differences Between ArcGIS and QGIS

The Most Epic GIS Software Battle in GIS History - GIS Geography