Free dem software for windows

This program is a simple terrain viewer, which reads USGS DEM files in ASCII format, and then renders actual Earth terrain with precision, which is selectable. Requires OpenGL support, in hardware highly recommended. Needs lots of CPU power and video memory . The key in this program is not a fancly look, but geometrically and optically correct rendering of Earth terrain to generate realistic view. Free for non-commercial use. Basic knowledge of geometry or GIS may be helpful to use this program.

Catches and logs unix like Syslog messages. You can define filters based on strings or IP-adresses and assign specific logfiles.

QuikGrid is an application which will read in a set of scattered data points (x, y, z) which represents a surface.
The program will generate a grid from this data and then display the surface as a contour map, or as a 3d representation. The left mouse button may be used to zoom in and pan about the display.
The right mouse button may be used to display information about the generated grid coordinates and data points.
A 200 by 200 grid representing 15,000 data points may be gridded in less than 3 seconds on a 500 Mhz Pentium (actual generation times may vary depending on how the points are distributed). The grid may be displayed as a wire frame or as a hidden surface grid, optionally with colours.
The grid and contour lines may be output as a DXF file. The generated grid may be output to a file as a series of XYZ triplets, in the DXF 3DFACE format or as an ER Mapper Raster Dataset. QuikGrid may be used to view 1-degree USGS DEM files.
QUIKGRID is easy to use. It will run on modest hardware platforms. It is well suited in situations where it is desired to have a quick look at a set of data points, for example under field conditions where only a portable PC is available. QuikGrid is documented through its help facility.