The Lead Gardens Blog offers a set of iniative cards for English Civil War games. They’re designed to work with the Victory Without Quarter rules, but no doubt could be used for many others.
Miniatures Rules
Star Wars Silent Death
Star Wars Silent Death is a set of modifications for the excellent Silent Death rules for the Star Wars universe.
Indo-Pakistani Campaign for Not Quite Mechanized
Chris Kemp has a mini campaign for his Not Quite Mechanized rules.
Tac Ant Combat Simulation
Tac-Ant is a set of free wargames rules for battles between hills of ants.
Seriously.
Late Roman Lion Rampant Variant
The I Live With Cats Blog has a variant for Lion Rampant featuring Late Romans.