Serlient Standard Edition - description from Softdepia.com:
Create Windows Programs from CGI/PHP Websites! Triplehash Serlient lets you package, run and distribute your PHP and CGI-based websites into Windows software. Serlient does its work by combining web-server software and web-browsing (Internet Explorer®) capabilities into one package. This allows users to distribute their website, or web applications just as a normal software application would be distributed. Serlient makes every web developer into a programmer! Serlient makes every web developer into a programmer by making available tools to execute a website like a normal Windows program. Software and websites running under Serlient need not be located on only one computer, but can run on hundreds of computers around the world. Serlient eliminates the boundaries between client and server and takes software into a truly location-independent environment.
Serlient Standard Edition is a "Free to try" program. You can download and try it for an evaluation period.