> Why don't you create a Mac version of this excellent 
> program ???
Lack of time (this would require a third build), and money 
(I can't afford buying another development platform, and 
Apple does NOT provide access to online OSX systems on the 
net, unlike other vendors such as HP or Sun)

The engine should compile on OSX, however. And KHttrack 
might work, too.. if you install KDE libs on OSX.