dumpns runs a namespace (and process) discovery and then dumps the results as JSON.

lspidns lists the tree of PID namespaces, optionally with their owning user namespaces.

lsuns lists the tree of user namespaces, optionally with the other namespaces they own.

nscaps determines a process' capabilities in some namespace.

pidtree displays a tree (or only a single branch) of processes together with their PID namespaces, and additionally also shows the local PIDs of processes (where applicable).