Scum of the High Seas is Rudi Geudens set of hex-based. card driven rules for playing games of Pirates on the high seas. Like others in this series, they’re based loosely on Richard Borg’s Battle Cry system.
The Lord of the Rings Yahoo group has army lists for playing a Aztec v Conquistators variant.
Tilly’s Very Bad Day is a set of free wargames rules for the Thirty Years War. They are designed as a fast play set.
The Junior General offers a set of rules — and paper ships — for the 1571 battle of Lepanto.
Pictors Studion has an English Civil War rules adaptation of Games Workshop’s Warmaster rules.