Serif Software's WebPlus is an awesome web designing tool for designers.
Seems to be a fairly comprehensive software. Do take a look.
Serif WebPlus for designing WebSites
Moderators: kikikikikiki, diptanshu, Dalbir
Re: Serif WebPlus for designing WebSites
Their DrawPlusgraphic designing tool is free!
Kikikikikiki bleach-treated my avatar! Isn't she sweet?