Contributing d20 publishers include:
0one Roleplaying Games - The Burning Tiger, an original adventure set in the land of Arthad
Atlas Games - Supplemental material from the Occult Lore sourcebook
Bastion Press - The Oath of Binding, an exclusive look at the esciting Oathbound campaign setting
Gaslight Press - A guide to the Fey in the Sun and Scale campaign setting
Goodman Games - Exclusive new material detailing aliens for the Broncosaurus Rex campaign setting
Green Ronin Publishing - Monsters from the East! Never before published outtakes from Jade Dragons and Hungry Ghosts
Guildhouse Games - In Pursuit of Magic, a stand-alone adventure set near the wizard city of Vundara
Hammerdog Games - Darkspyre, an original adventure that'll test your players to the limits
Heliocentric Studios - An advance look at Validus Populai, a new d20 superhero game being produced in conjunction with United Playtest
Living Imagination - Original Broadsides! material written exclusively for publication in Gaming Frontiers
Malhavoc Press - A sneak-peak at Monte Cook's latest mega-adventure, the thrilling Banewarrens
Pinnacle Entertainment Group - Outlaw of Kumeyaay Canyon, an original Deadlands adventure
Sovereign Press - The Scorpion's Tail, a new adventure for the Sovereign Stone campaign setting
Thunderhead Games - 3 new city locales for Bluffside, and a bonus Dragonstar location
Troll Lord Games - A frightening look at the Trotegin Giants--an all new monster for use in your campaign
Vox Popular Press - The Isle of Ormenos--return to World X with a new map and open game content for your d20 campaign
Plus! Making Magic Items by Monte Cook, The Lost Crypt of Shizaraht by Will Upchurch with cartography by Ed Bourelle, Marc Golden tackles the stranger side of the SRD, Emor, a new serial comic by artist Patrick Keith, Cartoons by Tony Mosely, Role of History by Andrew Hind, Ideas for funeral practices, gaming accessory reviews and more useful content than you can shake a stick at.