Flying Circus is a set of free wargames rules based on the old Avalon Hill Mustangs game.
The Miniature Wargaming Editor
Banners and Billhooks
Banners and Billhooks is a set of free wargames rules for historical “imagi-nation” wargaming in the medieval period.
Making Hexagonal Terrain Pieces
Small World Productions has an article on using Litko hex pieces as bases for terrain pieces. They look quite good.
Star Wars Miniatures Mass Battles Conversions
Arthur Chang has written a set of add-on rules for playing massed battles with the Wizards of the Coast rules for Star Wars miniatures.
Good Little Gardens
Good Little Gardens is a free print-and-play card game with tableau building and card drafting.