The Lightscape Visualization System is an advanced lighting and visualization application for creating accurate images of how a 3D model or an object of space would appear if physically built. http://www.lightscape.com/
Lighting calculation and visualization software for daylighting and electric lighting prediction. Products include AGI32, AGI-Light, Photometric Toolbox32 and WebZC. http://www.agi32.com/
Lighting calculation software for Windows and Macintosh. Allows to determine lamp selection and fixture spacing for general, task, and art lighting. http://www.lightcalc.com/
Offers Olivia and Fiona software packages to check your outdoor lighting design for compliance with dark sky requirements and unobstrusiveness. http://www.ozemail.com.au/~rayforge/