OSGeo - QGIS is a desktop geographic information system, or GIS.
BsmartGIS - bSmart GIS is a commercial off-the-shelf (COTS) web-based OGC (Open Geospatial Consortium) compliant GIS application software.
what3words - Geocoding system for the simple communication of locations with a resolution of 3 m
M.App Enterprise - Travel & Location
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.
Azimap GIS - Azimap is a web GIS developed on open source principles and offers GI professionals with the tools to visualise, analyse and share their spatial data on the web