ArcExplorer
Is a lightweight GIS data viewer developed by ESRI. This freely available software offers an easy way to perform basic GIS functions. ArcExplorer is used for a variety of display, query, and data retrieval applications and supports a wide variety of standard data sources. It can be used on its own with local data sets or as a client to Internet data and map servers. Download
Bentley View
Free CAD viewer from Bentley, which works with DGN, DWG, and DXF file formats. A powerful design review application, free for everyone on your design team.A CAD file viewing application that can open, view, and print DGN, DWG and DXF file formats. Download
Use this FREE* download to accurately view, plot, and publish authentic DWG and DWF files. And now, DWG TrueView incorporates all the functionality of DWG TrueConvert. This means you can translate any AutoCAD or AutoCAD-based drawing file for compatibility with AutoCAD Release 14 through AutoCAD 2008. Download
World wind
World Wind lets you zoom from satellite altitude into any place on Earth. Leveraging Landsat satellite imagery and Shuttle Radar Topography Mission data, World Wind lets you experience Earth terrain in visually rich 3D, just as if you were really there. Download
