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Online collection of all digital USGS 1:24K scale topographic maps (as well as various other GIS data) covering the United States, available as a free download. NPScape United States Department of the Interior National Park Service NPScape is a landscape dynamics monitoring project that provides landscape-level data, tools, and evaluations for ...
ArcExplorer is a lightweight data viewer from ESRI for maps and GIS data in these formats: ESRI Shapefile; ArcInfo coverages; ArcSDE layers; Images; ArcIMS Services (e.g., Geography Network sources) ArcExplorer performs a variety of basic GIS functions, including display, query, and data retrieval applications.
The shapefile format is a geospatial vector data format for geographic information system (GIS) software.It is developed and regulated by Esri as a mostly open specification for data interoperability among Esri and other GIS software products. [1]
On the client side, the viewers can be thin clients, custom clients or Esri desktop applications such as ArcMap, ArcExplorer, or ArcPad. ArcIMS uses Esri's ArcXML to receive and respond to requests from the client. The data behind ArcIMS is usually stored in Shapefile format (an open specification) or in an ArcSDE RDBMS database.
ArcReader (freeware, viewer) is a basic data viewer for maps and GIS data published in the proprietary Esri format using ArcGIS Publisher. The software also provides some basic tools for map viewing, printing and querying of spatial data. ArcReader is included with any of the ArcGIS suite of products, and is also available for free to download.
Online maps can be basically divided by the covered area (global or local) and by the representation of this area (classic drawn or orthophoto). Global online maps [ edit ] These maps cover the world, but may have insufficient details in some areas.
One of the most powerful online tools at your disposal is the sprawling Google Earth project, which allows you to use satellite imagery to view a three-dimensional representation of the planet ...
QGIS is a geographic information system (GIS) software that is free and open-source. [2] QGIS supports Windows, macOS, and Linux. [3] It supports viewing, editing, printing, and analysis of geospatial data in a range of data formats. Its name comes from an abbreviation of its previous name, Quantum GIS.