Here is a list of all namespaces with brief descriptions:

[detail level 123]

Nboost
Nmath
Nline	Conservation laws of a layered queueing network, enumerated from its structure
Nag
Naoi
Napi
Nlqn
Nautosolver
Nba
Ncache
Ncli
Nctmc
Nmapc_detail
Npools_detail
Nda
Ndpfqn
Ndqsys
Nenv
Ngen_detail
Nerror_detail
Nfes
Nfj
Nfluid
Npetri
Ngen
Nhttp
Ninfer
Nsmp_infer_detail
Nio
Ncode_gen_detail
Njmt_import_detail
Njmva_detail
Ntikz_detail
Nwfcommons_detail
Njmt
Nlang
Nprocesses
Nldes
Nengine
Nssj
Nwarm_detail
Nln
Nzc_detail
Nlossn
Nlp
Nlqn
Nnlp_detail
Nsrvn_detail
Nsrvn_out
Nlqns
Nlsn
Nlti
Nmam
Niltcme
Nreneging_detail
Nsync_detail
Nmapqn
Nqrfbas
Nmc
Ngate_detail
Nsmp_detail
Nssg_detail
Nmdd
Nme
Nmethod_registry
Nmmdp
Nmoment
Nmva
Nnc
Nnpfqn
Nopt
Nde
Nperm
Npfqn
Nsimplex
Npolling
Nqn
Ngen_detail
Npool_detail
Nqsys
Nmgck_sync_detail
Nmmapmap1detail
Nreg
Nretrieval
Nrng
Nsens
Nsim
Nsmc
Nmg1x_detail
Nrr_detail
Nsn
Nsnc
Nsolvers
Nmap_env_detail
Nspn
Nssa
Nmlmc_detail
Nsum
Nsym
Ntr
Ntrace
Nuq
Nutil
Nwf
Nwfn
Nworkflow
Nws
Nxml