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.
Click here to go to the download page.
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.
dirt and diy 