Sunder The Stars is a set of free wargames rules for Starship Combat.
starships
Space Fury Easy Starfighter Combat Rules
Space Fury are a set of quick and dirty space fighter combat rules.
One Page Fleets Starship Combat
One Page Fleet is Mike Wikan’s set of free wargames rules for starship combat.
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.
Event Horizon Starship Combat Rules
Event Horizon is a set of free wargames rules for quick play starship combat. It is played on a grid board.