Anna's archive mirrors z-lib and libgen, so those are the main alternatives. But it's unlikely anna's archive would go down so easily, they take a lot of precautions.
Oh, I was somehow under impression that libgen is no more. Glad to see it's not. I guess it was just a different domain.
Oh, I was somehow under impression that libgen is no more. Glad to see it's not. I guess it was just a different domain.