No, all virtual worlds require software to download.
Meez,smeet... i forget the rst
Fantage.com
Weeworld.co.uk
chit chat city,small world
Animal Jam, another free world, unless you get a special membership.
imvu is a game for only teens so be carful kids
super secret
I think it's called evoy.
ourWorld IMVU and many more!
Smeet is a Very good virtual world. I love it
there is meez.com secondlife kaneva clubpenguin poptropica
There are about tons of virtual worlds... Second Life is popular but only for teens You should try ourworld ;]