Here is a list of all namespaces with brief descriptions:

[detail level 1234]

NDumux
NExperimental
NDetail
NODE
NConcepts
NCVFE
NMultiStage	Multi-stage time stepping scheme implementations
NDetail
NPDESolver
NDofBackend
NBox
NTpfa
NCVFE
NFCDiamond
NPQ1Bubble
NIntersections
NVtkData
NRasterImageData
NVTKReader
NDuneVectors
NHelmholtzOperator
NIstlSolvers
NLATraits
NLinearSolverParameters
NLinearPDESolver
NPreconditioners
NNewton
NMultithreading
NExecutionBackends
NExtendedRichards
NGrid
NCapabilities
NInterpolationPolicy	Forward declaration of the linear interpolation policy (default)
NMetaData
NConcept
NDetail
NProperties	The energy balance equation for a porous solid
NTTag	Type tag for numeric models
NUtility
NDetail
NCCMpfa
NCCMpfaDataHandleBases
NCVFE
NInterpolationPolicy
NDetail
NQuadratureRules
NDiscretizationMethods
NCVFEMethods
NPoreNetwork
NDetail
NConcept
NFluidMatrix
NThresholdCapillaryPressures
NWettingLayerTransmissibility
NNonWettingPhaseTransmissibility
NPore
NThroat
NFluxVariablesCaching
NShallowWater
NNavierStokes
NSlipConditions
NIntersectionPolicy
NTriangulationPolicy
NChrono
NIO
NFmt	Formatting tools in the style of std::format (C++20)
NConcept
NJson
NIOName
NGnuplot	Helper functions related to gnuplot
NVtk
NDetail
NBinaryCoeff
NComponents
NDetail
NGeneratedCO2Tables
NFluidSystems
NDetail
NIAPWS
NFluidMatrix
NSolidSystems
NFreeFlowPoreNetworkDetail
NFreeFlowPorousMediumCoupling
NEmbeddedCoupling
NDetail
NEmbedded1d3dCouplingMode
NFacetCoupling
NFCGridManagerChecks
NMultidomain
NDetail
NOptimization
NDetail
NMultithreading
NParticles
NMPNCInitialConditions
NPython
NDetail
NDune
NAmg
Nnlohmann