Your website is written using HTML which uses to tell the browser what to do with certain bits of text etc. You can use a simple notepad program to write your website, but this is a lot of work. Frontpage took some of the hard work out by prompting you to remember bits of code plus it used colours on the text that helped you recognise bits of HTML code and errors in your text. Finally it had an FTP section built in that would send your site to your hoster.
I use FireFTP which is an Add On to Firefox to publish my site and can recommend it.
Only if your website is very complicated do you need a website builder tool, once set up, most websites can be edited / updated using Notepad