namespaces(category4-postfix.html) - phpMan

gitnamespaces (7)    - Git namespaces
lsns (8)             - list namespaces
nsenter (1)          - run program with namespaces of other processes
unshare (1)          - run program with some namespaces unshared from parent
XML::NamespaceSupport (3pm) - a simple generic namespace support class