Tutorial for 3D landscape visualization utilising USGS DEM files and the 3Dem program.

Promotes development of tools for constructing any part of the real world in interactive, 3D digital form. CAD, GIS, visual simulation, surveying and remote sensing. (free, with code) [win32, unix]

Offers Surfer and MapViewer software programs.

A free 3D viewer for Digital Elevation Model (DEM ) and Digital Line Graphs (DLG ) maps. (free, with code) [linux, requires GTK+]

Analysis software for design of tall architectural structures compliant to aviation regulations.

Realistic flight and terrain visualization with full 6 degrees of freedom of motion. Features simultaneous 3-D view and map views, and saving flights as movies or VRML files. [Windows]

Software for engineering and building related to roads.

Provide photorealistic landscape services and develop visualization software for same.

Provides information about generating 3D digital terrain models and maps, free data and software. Several SDTS file conversion utilities available for download.

Website of the official Web3D Consortium working group, with the goal of developing tools and recommended practice for the representation of geographical data using the Virtual Reality Modeling Language (VRML).