Godslayer is a set of fantasy skirmish rules with a complete set of miniatures. You can download the starter rules for free at the link.
rules
Relics Fantasy / Steampunk Miniatures Rules
Tor’s game Relics pretty much defies categorization. It’s a fantasy world, with a black-powder/steampunk vibe. Some of the factions look like homicidal dolls, while other resemble the faerie of yore. You can take a look at the rules for free at the link.
Sengoku Jidai Samurai Skirmish Rules
Sengoku Jidai is a set of quick play samurai skirmish rules. There’s also a Korean supplement.
World War II Skirmish Rules
The Tyneside Gamers offer a set of World War II skirmish rules. Lots of other rules sets at the page also.
Four Musketeers Skirmish Rules
Black Hat Miniatures offer Four Musketeers, a set of skirmish rules / scenario in which the Musketeers must retrieve the Queen’s earrings.