The Sector Administration

The Administrators are a group of elder oblices used by the illithid to store and process data. There are ten of them in total, each with a different purpose. They can join together into networks, pooling their abilities between them. While the process for this is unknown, the Administration is without a doubt one of the most knowledgeable groups of entities among the planes.
 

Index of Adminstrators

Admin. Sector Network
Parallax
Descent
History, specifically that of Creation through to the
Overmind's attempted apotheosis.
Currant-Wave
Salient
Truth
Magic, specifically that related to Chaos, Creation,
and the Twins.
Crimson-Shade
Infinite
Toil
Science, specifically ceremorphosis, mass levitation,
psionics, and the biologies of all living things.
Amaranth-Expanse
Divergent
Key
Future, specifically that which the Overmind predicted
to happen. The reset. The Authorship Three.
Vermillion-Black
Abhorrent
Hope
Politics, specifically the inner-workings of current
governments and society.
Amaranth-Expanse
Immortal
Form
Gods, specifically how godsparks work, where the
Ascended corpses lie, and the histories thereof.
Carmine-Danger
Imperfect
End
Death, specifically how souls work. The Pneumic Cycle. Vermillion-Black
Axial
Path
Cosmology, specifically the planes and how they are
linked. Locations of portals. How to hide from gods.
Carmine-Danger
Unwanted
Peace
War, specifically war magic, schematics for
war-machines, and the history of war.
Amaranth-Expanse
Undefined
Name
Refuse, specifically discarded bits that do not fit
with the other Administrators. Connecting pieces.
Scarlet-Null

A Historie Complete of Elder Minds

[Written in inverted script and comprised of eight different languages, this tome was obviously written by someone who made this particular topic their life's work. The identity of the writer is either lost or intentionally obscured.]

Governor Indices

...designed as a violent ending for the Ceremorphized...thought to be a biologically mutated form of a Deep Eyebeast, made for the purpose of reversing ceremorphisis...instead inverted a soul...when used on the Ceremorphized begins the Whispering Way...first of which to pass through the Alhoon stage to true lichdom a researcher named Tholim...each Index is thought to provide the ability to allow Administration to refind each other if lost among psychic waves...and unhook a slave colony from its Controller...such an ability, while unintentional on the part of the Indices' creator, proved useful to those the creators fought...very small number, if any, left.

Planar Moderators

 
...tetraangular beings of waveform thought that possess a Knowing...an ability to know the truth when spoken...they access and delete memories from Administration and other lifeforms...made from the gilded essence of the Upper Arcs of each ring...celestial in make, but sinister in purpose...designed for the Singular Purpose of the coming-together in the vast mindspace...less than one-hundred remain, likely far fewer...slaved still to their purpose.