Here is a list of all namespaces with brief descriptions:

[detail level 123]

NAC_GROUPS	List of known groups for advanced configuration options
NAC_KEYS	List of known keys for advanced configuration options
NAC_STACK	Limits and default settings for the coroutine stack size allowed
Nalg
NAPP_MONITOR
Nbase64
NBMP2CMP
►Nboost
►Ntest_tools
Ntt_detail
NBS
NCADSTAR_PARTS_LIB
Ncalc_parser
NCFB
►NCLI
NEXIT_CODES
NCV
NDETAIL
Ndetail
NDSN	This source file implements export and import capabilities to the specctra dsn file format
NEASYEDA
NEASYEDAPRO
►NEDA_UNIT_UTILS
NUI
NENV_VAR
NESERIES	E-Values derived from a geometric sequence formula by Charles Renard were already accepted and widely used before the ISO recommendation no
Nfontconfig
NGEOM_TEST	Utility functions for testing geometry functions
NGERBV
►Ngoogle
Nprotobuf
NIO_UTILS
NJUNCTION_HELPERS
Nki
NKI_EVAL
NKI_TEST
►Nkiapi
►Nboard
Ntypes
Ncommon
NKICAD_FORMAT
NKIEVAL_UNIT_CONV
NKIFONT
NKIGEOM
►NKIGFX	The Cairo implementation of the graphics abstraction layer
NBUILTIN_FONT
NDETAIL
NPREVIEW
NKIGIT
NKIGIT_ERROR
►NKIPLATFORM
NAPP
NDRIVERS
NENV
NIO
NPOLICY
NPRINTING
NSECRETS
NUI
NKIUI
NLAYER_UTILS	Utility functions for dealing with layers in the context of a PCB board.s
NLIBEVAL
►NLIBRARY_TABLE_GRAMMAR
NKEYWORDS
NLIT_TEXTURE_SHADER_ATTRIBUTES
NMARKUP
NMATERIAL_ATTRIBUTES
Nnanodbc
Nnlohmann
NnumEval
NODB
NODB_ATTR
NPAD_UTILS
NPCAD2KICAD
NPCB
NPCBCALC
NPGE
NPNS	Push and Shove diff pair dimensions (gap) settings dialog
NRC_JSON	Contains the json serialization structs for DRC and ERC reports If you are trying to change the output schema Please update the schemas located in /resources/schemas/ as both documentation and use by end user implementations
►Nrtti_dump
Nhierarchy_dumper_internals
NS3D
NSCH
NSEXPR
NSHADING_ATTRIBUTES
NSIM_LIBRARY_SPICE_PARSER
NSIM_MODEL_RAW_SPICE_PARSER
NSIM_MODEL_SERIALIZER_GRAMMAR
NSIM_MODEL_SERIALIZER_PARSER
NSIM_MODEL_SOURCE_GRAMMAR
NSIM_MODEL_SOURCE_PARSER
NSIM_MODEL_SPICE_PARSER
NSIM_MODEL_SUBCKT_SPICE_PARSER
NSIM_VALUE_GRAMMAR
NSIM_VALUE_PARSER
NSIM_XSPICE_PARSER_GRAMMAR
NSPICE_GRAMMAR
Nstd	STL namespace
NSYM_CHOOSER_TIMING
Ntest
Ntext_eval_units
NTMATCH
NTOOL_EVT_UTILS	Namespace TOOL_EVT_UTILS
NTRANSLINE_CALCULATIONS
►NU3D
NBLOCK_TYPES
NHEADER_PROFILE_FLAGS
Nutf8_utils
►NUTIL	A model subscriber implementation using links to represent connections
NDETAIL
NX3D