I think Fire and Fury is the finest set of miniatures rules ever written. It has elegantly simple mechanics, fun gameplay and set the standard for high-quality rules presentation.
Now the Fire and Fury people are at work on a version for America’s other “horse and musket” wars: The Revolution, War of 1812, and Mexican War. You can find the playtest versions of Fire and Fury: Americas Wars here.
Rebel Publishing offers “Two For Tea”, a set of fast play rules for the American War of Independence. I’ve tried them, and they work well.
From Lexington To Yorktown is a set of free wargames rules for American Revolution battles. Each model equals 10 infantry.
Arnold’s Finest Hour is a set of free wargames rules for the American Revolution Battle of Saratoga from the prolific Junior General.
Krigsspil has a large selection of flags for the American Revolution, free for the downloadng