Title: Terraform
Vendor: Open source(Robert Gasch and David Bartold)
Web Site: http://terraform.sourceforge.net
Type: Raster Based
Focus: Mapping/Fractal/3D
Platform: X-Windows(works on Mac and, I believe Windows)
Price: free
Description:
Terraform is an open source interactive height field generation and manipulation program, giving you the ability to generate random terrain and transform it. Terraform runs under Linux and other UNIX systems under the X11 Windowing system. It uses the GNOME desktop platform and thus has a (more or less) consistent graphical user interface which doesn't require use of the command line.
Terraform allows you to generate random terrain using a number of algorithms and then selectiveley change the terrain using a variety of transformations. Where possible, the transformations provide a real-time preview, giving you instant feedback on the effect of any parameter changes.

Examples:
None Yet.


The link above does not exist. I searched the site for Terraform and came up with nada. Not sure if anyone already posted this. If so, sorry.