Pinnacle put up their Savage Worlds 2011 Free RPG Day The Wild Hunt up for free in PDF on their site. You can grab the free Savage Worlds Testdrive Rules while you are at it.
Stone Table Games has posted their Aspect starter rules and adventure Here There Be Demons. You'll need to register for their forums to download.
The Tunnels & Trolls 2011 Free RPG Day release Rescue Mission is not yet available in PDF, but the printed copy is available for $2 for Flying Buffalo. While you are at it, grab the 2008 Free RPG Day release from them. With shipping (in the states) the 2 will cost you $7 shipped.
White Wolf - Dark Colony -
2 hours ago