Here is a list of all namespaces with brief descriptions:

Nmimicpp
Ncall
Ncustom
Nexpect
Nexpectation
Npolicies
Nfacade
Nfinally
Nformat
Nmatches
Nrange
Nstr
Nprinting
Ntype
Nlexing
Ntexts
Nparsing
Nstate
Nreporting
Nsequence
Nsettings
Nthen
Nutil
Nstacktrace