Here is a list of all namespaces with brief descriptions:

[detail level 123]

NNickvision
NApp
NDatabase
NEvents
NFilesystem
NUserDirectories
NHelpers
NCodeHelpers
NSizeHelpers
NStringHelpers
NKeyring
NLocalization
NDocumentation
NGettext
NNetwork
NWeb
NNotifications
NAppNotification
NShellNotification
NSystem
NCredentials
NEnvironment	Functions for working with the apps's shell and environment
NHardwareInfo	Functions for working with the system's hardware information
NUpdate