Esri ArcGIS - ArcGIS provides contextual tools for mapping and spatial reasoning so you can explore data & share location-based insights. ArcGIS is the heart of the Esri Geospatial Cloud. Try ArcGIS for free with 21-day trial.
OsmAnd - Global mobile map viewing and navigation for online and offline OSM maps
Geopointe - Geopointe enables Salesforce users to gain spatial insights via maps and apply geography to business processes.
Google Maps - Find local businesses, view maps and get driving directions in Google Maps.
ArcGIS Online - GIS
MAPS.ME - Fast, detailed and completely offline maps for mobile devices