InFF,net, Go to browse then Movies, you will find over 60 thousand Star Wars stories.? In Browse, go further down the search list, you will see Movies again.? Click on that and it has over 6 thousand x-over stories.
I do not know of any stand alone Star Wars sites (I've never looked for one).? But with over 66 thousand Star Wars stories on FF.ner, that should help you whet your appetite!? Hope this helps.