I have used KompoZer and Nvu before that. Read about them here:
http://www.nvu.com/

Also many web hosting sites offer tools and applets that you can add to your
site, from counters and guest books to full blown programs such as Wordpress for
blogging, etc. Wordpress.com allows you to quite easily set up a free webpage
complete with themes and styles. There are many sites such as this.