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List of US government free GIS data online

The US government publishes a plethora of useful, high-quality GIS data sources online. The data includes: Municipal and international boundaries Classified points of interest Geographic maps ...
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Comparison of open data portal solutions

For many organizations, such as local/county/state governments, providing public access to GIS data is a challenge. Simply knowing what data is available, what it is, who owns and maintains it, and ...