I have been experimenting with Kompozer for the past couple of weeks. Mostly, I like it, but the "source view" could display the source text in a more legible manner. Used in conjunction with a nice text editor like Kate or Bluefish, it works pretty well.

I do find Kompozer much easier to use than I ever found Quanta to be.

Frankly, one of the three Windows programs I miss is HTMLKit; it didn't have WYSIWYG editing, but Tidy was built-in with a GUI output. But not enough missed for me to use Windows (the other two programs are The Semware Editor, best text editor ev-uh, and Vueprint--it was sort of like XNView, but easier and more flexible--which now seems to be dead, in case anyone wanted to ask).

yes open office is good but if you don't really want to mess with html tags and need a gui toolkit, Then my vote goes to seamonkey composer cause it let you construct a web page with a nice gui.