PageSnooper is a small script that grabs HTML source code from other sites and display it on your site, complete with javascript codes, if any. PageSnooper is an easy to install, easy to maintain CGI program written with Perl 5 to let you see the real code behind web pages.
PageInserter will grab the content of any file and display it where you want using simple Javascript tag. PageInserter can do everything you can do with the SSI include tag and more.