QGIS Project:
http://www.qgis.org
Environmental Systems Research Institute (ESRI): http://www.esri.com
Google Earth:
https://www.google.com/intl/es/earth/
Google Earth Engine:
https://earthengine.google.com/
OpenStreetMap:
https://www.openstreetmap.org
RStudio:
https://rstudio.com/
Leaflet:
https://leafletjs.com/