A note on FrontPage: It supports web bots which is a server-side scripting language similar to Apache SSI.
If the web server supports these FrontPage Extensions, you can use Web Bots to add SEARCH and COUNT, etc. to your website as native content.
FrontPage extensions are common because, I have heard, Microsoft actually subsidises webhosts that support them - and gets the money back from the sale of FrontPage. For this reason, with a FREE webhost, FrontPage Extensions might be your only server-side language. This is an example of Microsoft attempting to achieve another "Lock In".
FrontPage Express is the free version of Microsoft's editor supporting fewer tags, and although discontinued for some years, it can still be found floating around on the web.
You can add Web Bots to a HTML file using any editor, but the code is somewhat cryptic and difficult to write. That code appears to include some kind of checksum to prevent people adding it without FrontPage or FrontPage Express. It is normally more effort than it's worth, to try working around Microsoft's checksum.
The next most common language, only occationally supported by FREE hosts, is Apache SSI. All the other server-side languages such as PHP, CGI, PERL, JSP, ASP, etc. generally require a more expensive hosting plan, but they are more empowering so it's apples and oranges really.
Hope that didn't confuse you.