POV-Ray: www.povray.org

Suzuki's Density File Extension Patch: staff.aist.go.jp/r-suzuki/e/povray/iso/df_body.htm

Leigh Orf's Research Page: research.orf.cx

U. of I. Convective Modeling Group: redrock.ncsa.uiuc.edu/AOS/home.html

NCOMMAS Model: www.nssl.noaa.gov/users/lwicker/public_html/commas.html

mjpeg tools: mjpeg.sourceforge.net

GeoWall: www.geowall.org