Mantic offers a free pdf of their Vanguard Fantasy Rules
Rules: Fantasy
Rules By Ral
The Mainly 28s site has the original Rules By Ral fantasy rules sets.
Axe Age Rules
Axe Age is a set of free wargames rules for miniature wargames in a dark fantasy setting.
Frostgrave Rules Free From Osprey
No April Fools Here: Osprey is offering the core rules for its popular Frostgrave rules for free this week.
Frostgrave Rules Available For Free!
Osprey is offering its basic rules for the popular Frostgrave miniatures game for free.