Richard Bradley’s State of War ACW Skirmish Rules are available at the Tyneside Wargames Club site.
rules
Castles, Cogs & Chevauchées
Castles, Cogs & Chevauchées is a set of campaign style rules for skirmish level combat using the Knights and Knaves skirmish rules.
Knights and Knaves rules at the same link
Coastal Warfare Rules
Richard Bradley has a set of WWII Coastal Warfare Rules. This is a period I’ve always wanted to play.
Greater Space Battles
Greater Space Battles is a set of solo rules for space battles using miniatures from Solipsist Games.
Familia Gladiatoria Gladiator Rules
Familia Gladiatoria is a set of free wargames rules for gladiator campaigns.