Here is a list of all namespaces with brief descriptions:

[detail level 12345]

Naccessibility
Navmedia
Nbasegfx
▼Ncom
▼Nsun
▼Nstar
Naccessibility
Nawt
Nbeans
Ncontainer
Ndatatransfer
Ndocument
Ndrawing
Nembed
▼Nform
Nruntime
Nvalidation
Nframe
Ngraphic
Ni18n
Nlang
Nlinguistic2
Nsdb
Nsdbc
Nsmarttags
Ntext
Nucb
Nui
Nuno
Nutil
▼Nxml
Nsax
▼Ncomphelper
Nstring
Nconnectivity
Ncppu
Ndbtools
▼Ndrawinglayer
Nanimation
Nattribute
Ngeometry
Nprimitive2d
Nprocessor3d
Nediteng
NEnhancedCustomShape
NEnhancedCustomShapeTypeNames
NFmXFormShell
Nimpl
▼Nlegacy
NSvxMargin
NSvxOrientation
NSvxRotateMode
No3tl
Nosl
NPresetOOXHandleAdj
Nreportdesign
Nrtl
NSameContentListBox
Nsd
▼Nsdr
Nanimation
▼Ncontact
NUnoControlContactHelper
Noverlay
Nproperties
Ntable
NSdrEngineDefaults	Global default settings for the DrawingEngine
Nsfx2
NSpacingListBox	Custom Widget ListBox to hold entries for Spacing & Margin settings of Header/Footer
Nsvt
▼Nsvx
Na11y
Nclassification
NDocRecovery
Nframe
▼Nsidebar
NNBOutlineTypeMgrFact
NSignatureLineHelper
NSvxFillAttrBox
NSvxFillTypeBox
▼Nsvxform	Class FmSearchEngine - Impl class for FmSearchDialog
Ncharset_helper
NControlLayouter
Ntextconversiondlgs
Ntools
NTransfrmHelper
Nunogallery
Nutl
Nvcl
Nweld