Several thought-provoking NPCs, as well as In Nomine New York and San Francisco (see Settings), In Nomine Touched by an Angel, and some cuts from the Corporeal Players Guide
A not-quite-canonical view of In Nomine. It contains new or modified Superiors (e.g. Uriel or Khalid), NPCs, adventure seeds, and rules for adapting In Nomine to a LARP environment or playing Word-bound Celestials. Some overlap with the In Nomine Collection.
Seriously oddball and weird; mostly NPCs, with some fun artifacts, minor choirs and bands, the occasional fan fiction and adventure seed. Warning: may make your brain hurt.
Manny Nepomuceno's In Nomine site, containing sundry game resources for In Nomine. Also includes writeups for In Nomine Dragonlance and In Nomine Philippines.