From Chris Gilders comes No Quarter Fantasy Rules. These free wargames rules are a massive work, with 83 pages in the main rules book alone. There also are a large number of army lists, which is the real strength of the set. Like many fantasy games, figures are defined by a model profile, detailing combat stats, actions, strength, toughness and wounds. This is an amazingly comprehensive work for a free rules set, covering every aspect of fantasy warfare you could want.
Hundred Kingdoms is a set of free wargames rules for fantasy battles with a wide variety of factions.
The Wheel of Time Miniatures game is based on The Robert Jordan novels of the same name.
Dinosaur Cowboys is a set of role playing / miniatures rules that reminds me of the old comic Cadillacs and Dinosaurs. It looks like a lot of fun.
Burrows and Badgers is a set of free wargames rules for tabletop adventures with bands of anthropomorphic animals. There’s also a supporting set of miniatures.