North and South is a fan supplement for Kings of War, Mantic Games’ free fantasy rules. The rules cover both regular American Civil War games and the ACW with Zombies.
Black Powder is a set of free wargames rules by Wes Rogers for skirmish warfare in the period 1600 – 1870.
Civil War Maps brings together materials from three premier collections: the Library of Congress Geography and Map Division, the Virginia Historical Society, and the Library of Virginia. Among the reconnaissance, sketch, and theater-of-war maps are the detailed battle maps made by Major Jedediah Hotchkiss for Generals Lee and Jackson, General Sherman�s Southern military campaigns, and maps taken from diaries, scrapbooks, and manuscripts�all available for the first time in one place.
Most of the items presented here are documented in Civil War Maps: An Annotated List of Maps and Atlases in the Library of Congress, compiled by Richard W. Stephenson in 1989. New selections from 2,240 maps and 76 atlases held by the Library will be added monthly.
Mike Callan offers this set of free wargames rules for American Civil War Ironclads. The set originally was published in Wargames Illustrated 14.