Here is a list of all documented namespaces with brief descriptions:

[detail level 12]

NAccess
NAgi
NAudio
NCine
NCommon
NCruise
NCryOmni3D
NDraci
NDrascula
NEfh
NGob
NGroovie
NHopkins
NHugo
NKyra
NLastExpress
NLilliput
NLure
NM4
NMade
NMADS
NMM
NMohawk
NMTropolis
NNancy
NParallaction
▼NQDEngine	Базовый класс для игровых ресурсов
Nxml	Парсер XML на базе expat
NQueen
NSaga
NSci
NScumm
NSky
▼NSRCTools
NResamplerModel
NStarTrek
NSword1
NSword2
NSword25
NTeenAgent
NTinsel
NToon
NTouche
NTucker
▼NTwinE
NHQR
NVCruise
NVoyeur
NZVision