Here is a list of all namespaces with brief descriptions:

[detail level 12]

NAlignment
▼Nbes
NCollection
NString
Nbitmanip
Nbpkt
NCalibData
NcalibUtil	Module implements methods for clients to get generic services
NDCChildren
NDCConjugation
NDChain
▼Ndchain
Ncandidateitr
Nchildren
Nconjugation
NDecayChain
NDetVerSvcPack
NDimError
NDistBoss
NDQAEvent
NEFBesTimer
Nefhlt
▼Neformat
Nhelper
Nold
Nwrite
Nefpsc	Pesa Steering Controller for Event Filter algorithms
Ners
NEvent
▼NEventModel
NAnal
NDigi
NDst
NEvtRec
NGen
NHlt
NMC
NPhys
NRecon
NTrig
NZdd
NEvtCyclic3
Nfacilities
NFieldDBUtil
NGlobal
NHepGeom
NHepMC
NHltProcessor
NKalmanFit
NPi0
NPreCXX11
NRawFileTools
Nrb
NrdbModel
NRealDBUtil
NROOT
NSimMat
Nstd
NTrigConf
▼NTrkBase
NFunctors
NPredicates
NTrkEnums
NVTXPDGM
NWidget
NxmlBase
NXmlRpc