Star Wars, Shadowrun, Call of Cthulhu, Vampire, Mage and Werewolf have all rivalled D&D and the 'fantasy' genre at some point in their histories.
The irony is that arguably, they all incorporate a good deal of fantasy:
Star Wars: Has it's own version of magic, even has sword fights and "knights" to bring the sword & sorcery allusions even closer.
Shadowrun: Magic, elves, orcs, trolls etc.
Call of Cthulhu: Monsters from outer space. Even has magic and magi.
White Wolf games: Generally, you're playing a fantasy monster or occupation (such as Mage). (Arguably they're monsters from horror, but they've since been borrowed by S&S fantasy technology, so there's overlap.)
You might think that's drawing a rather long bow, but these are all fairly close cousins of swords & sorcery when you consider how much closer they are than, say,
Cyberpunk 2020. (In fact, the appeal of S&S fantasy might explain why a fantasy/cyberpunk genre-hybrid like
Shadowrun did better than the pure cyberpunk of
'2020.)
You could use Star Wars' Force for a magic system, Shadowrun's demihumans, and monsters and magi from Call of Cthulhu and the World of Darkness...hey presto, you've almost got a swords & sorcery world right there.
