As discussed in my review of the Pathfinder RPG Bonus Bestiary, not every 3.5 Monster Manual monster will be in the first Pathfinder RPG Bestiary. Some were passed over for being too niche, others because they were not open...

Publisher: Paizo Publishing A DM can never have enough monsters, and a free baker’s dozen is useful to anyone.

Updating non-core 3.5 options to Pathfinder? Substituting a suboptimal feat? Need an NPC in a hurry? NPC Feats is a game aid for DMs looking to balance encounters quickly. Download the NPC Feats PDF

Publisher: Paizo Publishing Dragons were awesome before awesome meant cool. Paizo tries to define these creatures and their role in Golarion in this Pathfinder Chronicles sourcebook.  

The 3.5 core rulebooks. The 3.0 core rulebooks. Unearthed Arcana. The Rules Compendium. Errata. Three public alpha tests, a beta test, and an official Pathfinder rulebook. Countless published and web-based third party material. House rules. The third edition of...