Google Earth Pro is great for visualizing spatial data and making it accessible to the masses. It used to cost $400 a year but now it’s free.
OpenStreetMap- The wikipedia of maps. Click here.
QGIS– An open source GIS platform.
AmigoCloud- In fact, with AmigoCloud you can have a project up and running within 5 minutes. Whether you are documenting geo-tagged photos of invasive species, keeping track of city water pipelines at centimeter precision, or setting up disaster assessment areas without network connectivity, AmigoCloud has you covered. Free account.