Off topic...
OPERA...All the way, LOADED is a good word for it,

"Mozilla and Netscape have either the same engine "

They are, Fact: Netsape is based on the Firefox Code.

On topic... No real difference between the two, Its just the name, netscape has been around much longer..much much longer and still holds a fimiliar family household computer name..for browsers anyway) among the non contemporary users that is