The Hugo awards and the Prometheus awards are different in focus, but occasionally overlap.
This year, the overlap is minimal but worth mentioning: In their respective Best Novel categories, one 2021 work has been recognized at some level by both awards.
Project Hail Mary, Andy Weir’s sf novel, is one of six Best Novel finalists in the Hugo Awards, presented nearly annually since 1953 by sf fans attending or supporting the World Science Fiction convention.
Weir’s novel was also one of 16 works nominated this past year for the Best Novel category of the Prometheus Awards.
Robert Heinlein’s The Moon Is a Harsh Mistress is a classic of libertarian science fiction; along with Ayn Rand’s Atlas Shrugged, it was the first winner of the Libertarian Futurist Society’s Hall of Fame award in 1983. Many science fiction fans, and not only libertarians, regard it as one of his best novels. But for nearly half a century after its original publication in 1966, it inspired no obvious imitators. Now, that’s started to change, with the appearance of multiple novels that explore the idea of a “free Luna” in the near future.