The Jackson Gamers offer Ancients By Ral, an ancients version of the venerable Rules By Ral system.
ancients
Easy Rules For the Battle of Thermopylae
If the movie 300 has inspired the wargamer in you, but not enough to go out and paint 300 Spartans and a couple of thousand Persians, you might want to head on over to the Junior General’s site. There you will find simple rules and paper figures for refighting the battle of Thermopylae
Celtic Skirmish Game
From Warspawn Games: Celtic Skirmish, a combination miniatures / board game.
Roman Vexilla (Flags)
From the Red Rampant site comes an article on Roman Vexilla (flags, or standards). Useful information for anyone building a Warhammer ancients army of Romans.
Blades of Bronze Ancient Skirmish Rules
Blades of Bronze is a set of free wargames rules designed for short skirmish 15mm ancient wargames. The rules revolve around the ability of the leaders to give orders to the troops.