Here is a list of all namespaces with brief descriptions:

Nxt_core
Nxt_idxlist_abstract
Nxt_idxlist_collection
Nxt_idxsection
Nxt_idxstripes
Nxt_idxvec
Nxt_mpi
Nxt_redist_base
Nxt_redist_int_i2
Nxt_redist_int_i4
Nxt_redist_int_i8
Nxt_redist_logical
Nxt_redist_real_dp
Nxt_redist_real_sp
Nxt_sort
Nxt_ut
Nxt_xmap_abstract
Nxt_xmap_intersection
Nyaxt