i tried , kompozer,n’vu, but the good one is http://www.ezgenerator.com/
men , its so easy to do a pro web, with podcasts , slideshows , mp3’s , realy easu to update the webs ,fanstastic , you can do your e-comerce shop really easy…
Its not opensource , but it’s worth it .
I did this web , thw actual web took me to do it a couple of days and i was just learning the software http://ezgusers.e-officedirect.com/13112007172639tweakingknobs/
The graphics , made in blender , it is still in progress…
;D