Aberzanzorax
Hero
Tome of horrors 1-3 by Necromancer Games
Monsternomicon 1 and 2 by Privateer Press
I liked the flavor of Sword and Sorcery's Creature Compendiums 1-3...but I'd put them on a (but just one) tier below "greatest".
Fantasy Bestiary by Atlas had a great approach, but the monsters themselves were slightly generic for me...also on tier "almost super awesome, but not quite". Ditto for Liber Bestiarus.
Then there were the monster books that were more specialized...but not sure if you want to know about those as well. (e.g. Book of Hell, Anger of Angels, Libris Mortis, etc)
EDIT: agreement on book of Unremitting Horror. BE CAREFUL if you buy it though...if you care about system there's one for Gumshoe and one for d20, as is mentioned above.
Monsternomicon 1 and 2 by Privateer Press
I liked the flavor of Sword and Sorcery's Creature Compendiums 1-3...but I'd put them on a (but just one) tier below "greatest".
Fantasy Bestiary by Atlas had a great approach, but the monsters themselves were slightly generic for me...also on tier "almost super awesome, but not quite". Ditto for Liber Bestiarus.
Then there were the monster books that were more specialized...but not sure if you want to know about those as well. (e.g. Book of Hell, Anger of Angels, Libris Mortis, etc)
EDIT: agreement on book of Unremitting Horror. BE CAREFUL if you buy it though...if you care about system there's one for Gumshoe and one for d20, as is mentioned above.