QGIS - QGIS is a desktop geographic information system, or GIS.
GRASS GIS - GRASS GIS is a free Geographic Information System (GIS) software used for geospatial data management and analysis, image processing, graphics/maps production, spatial modeling, and visualization.
what3words - Geocoding system for the simple communication of locations with a resolution of 3 m
ArcGIS - ArcGIS software is a data analysis, cloud-based mapping platform that allows users to customize maps and see real-time data ranging from logistics support to overall mapping analysis.
Topocal - TopoCal - Cálculos Topográficos: la topografía al alcance de todos. ¡Ya puedes descargar TopoCal 2020!
KeplerJs - The open source full-stack geosocial network platform