Core Game Development Studios offers a set of free wargames rules called Timeline. From the author: Timeline Skirmish is the skirmish game covering all historical ages and into the far future. This game is meant to be fast and furious.
The Miniature Wargaming Editor
Dunger Racing Game
Dunger Derby is a miniatures game of racing little wasteland beasties called Dungers. You really have to take a look to get it.
Warlord 2085 Science Fiction Rules
Skank Games offers Warlord 2085, a set of free wargames rules for fast play science fiction miniatures.
Strange Aeons 18th Century Modifications
Strange Aeons is a commerical rules set, but if you already own it, you may be interested in these free modifications for playing in an 18th Century setting.
Making A Free Standing Trench Terrain Board
Roundwood’s World has an excellent photo illustrated post on how he built a trenches terrain board. It’s something I’ve always wanted to do.