The present invention is a method to develop and test the WML/HTML applications,
and in particular web sites, on a multitude of user agents/browsers at the same
time. The user selects the browsers in which the user has an interest. The method
executes the web site file on the selected browsers and then displays on a virtual
screen, screen shots of the file as viewed on different browsers. The user can
use this information to modify their HTML/WML source code and run the code again
through the program and view the changes in the output. The present invention can
incorporate a WML/HTML editor, which will allow the user to make changes on-line
and recheck their results. This method receives a HTML/WML file, selects a browser
on which to display the file, edit the displayed output to the file and displays
the edited version of the file on the screen. This process can be repeated for
a number of browsers.