This is the home page for SPECTRE, a tool for affordable three dimensional visualization. Follow the "About" link to learn more about SPECTRE; follow the "Team" link for the names and e-mail addresses of its creators; follow the "Images" link to see screenshots of the software and pictures of actual SPECTRE scenes; follow the "Download" link to download the source code; follow the "Documentation" link to view the SPECTRE manuals and design documents; and follow the "Links" page to SPECTRE-related sites. system.