WGR Ancients 7th Edition is available for free as a pdf download.
Miniatures Rules
WRG Infantry Action 1925 – 1975 Rules
The classic WRG Infantry Action 1925 – 1975 rules are available free for the downloading. These are the June, 1972 edition of the rules. The link opens a pdf.
Spaceship Miniatures and Games List
Tom’s Spaceship Miniatures / Games List offers a nice resource for people getting into this type of gaming. FWIW, Silent Death is one of my all time favorite games.
With MacDuff To The Frontier
Ross McFarlane has posted his “With MacDuff To The Frontier Rules” as originally published in the late, lamented Courier.
Naval War WWII Rules
Naval War is a set of free wargames rules for World War II naval battles. From the website:
Naval War is a Tabletop Naval Miniatures Game designed to be played on a table-sized battle area with World War Two ship miniatures. The game rules and any aids needed for play are free and available for download on the site. The game is not tied to a specific minatures line and is suited for many different game scales (1:1800 – 1:6000)
Naval War is a game, not a simulation. The aim of the game is to recreate the feeling and immersion you get when reading the battle reports of famous sea battle like the Battle of the Coral Sea or the battle of the Java Sea. The focus lies on the action and on the ships on the table, so a lot of the technical details have been worked into easy to read datacards and quick game mechanics.