Honestly I always liked Tinman Games. They're the closest thing to a "successor" to the FF books.
Though seemingly lately they got lazy and instead of continuing to publish their own series with a very fleshed out world/history, they focused mostly on just reissuing the old FF books with a couple updates.
Monetizing interactive fiction, 99% of the time, produces something that is gay as hell in my humble opinion.
When it's a hobby done by impassioned amateurs it ends up producing something that's just better, in some intangible way