Quick Intermediate Level Skirmish is a set of free wargames rules for battles with small force sizes. It is multi-genre and designed to be simple.
Miniatures Rules
WarZone Resurrection Rules
WarZone, in its original incarnation some twenty years ago, was one of my favorite games. I still have substantial painted armies from that era. Then the game went through a series of owners, rules changes, and model changes. Eventually, it died, only to be resurrected by Prodos. That company has the latest version of the WarZone rules free for the downloading.
Warhammer Colonials From Jervis Johnson
Warhammer Colonials is a set of amendments to Warhammer 40K for 19th Century colonial warfare. from Jervis Johnson himself.
Darrell’s 15mm Napoleonics
In Darrell’s 15mm Napoleonics Rules, each unit represents an Infantry Battalion, Cavalry Regiment or Artillery Battery consisting of 2 – 4 Stands.
American War Of Independence Warhammer Variant
Jimi Tubman offers a set of free wargames rules for the American War of Independence based on the Warhammer ECW rules.