The Itinerant Wargamer blog has an article on speed painting horses.
No Dachi Samurai Skirmish Rules
No Dachi is a set of free wargames rules for Samurai skirmishes.
Village Pillage Print and Play
Village Pillage is a free print and play game for 2 to 5 players with simultaneous card play.
Medieval Skirmish Rules
Richard Bradley’s Medieval Skirmish rules are offered for free on the Tyneside Wargames Club site. There actually are quite a few free wargames rules there. All look quite playable and fun.
Seven Years War Rules
Richard Bradley of the Tyneside Wargames Club offers a set of free wargames rules for the Seven Years War. The rules are designed for 15mm figures, where a battalion is represented by 3-4 bases.