Prestige Classes by Order:

Order of the Sword:
Shadow Striker
Holy Liberator
Knight of the Chalice
War Priest
Cavalier

Order of the Word:
Evangelist
Church Inquisitor
Sacred Exorcist
War Priest
War Chanter

Order of the Shield:
Dwarven Defender (Dwarf not a pre-req)
Templar
Knight Protector

Order of the Collar:
Bounty Hunter
Shadow Spy
Church Inquisitor
Consecrated Harrier
Sacred Exorcist
Invisible Blade
Justicar

Order of the Sun:
Sacred Fist
Kensai
Tattooed Monk

Order of the Cloth:
Hospitaler
Regian Healer: This is a class I have developed.  If you are interested, I can give you the specifics.  Basically it is a 3 level prestige class that maximizes ones healing abilities.