a utility that adds a management tool to the console
snap-in - A type of tool that you can add to a console supported by Microsoft Management Console (MMC). A standalone snap-in can be added by itself; an extension snap-in can be added only to extend the function of another snap-in. A snap-in is used to manage services for a component or product. Exchange System Manager is an example of an MMC snap-in.
An administrative tool that runs within Microsoft Management Console.
A management object that you add to the MMC to handle tasks such as AD management and disk defragmentation.
A type of tool you can add to a console supported by Microsoft Management Console (MMC). A stand-alone snap-in can be added by itself; an extension snap-in can only be added to extend the function of another snap-in. See also: Microsoft Management Console (MMC)