Memory is an extremely light-weight utility to help you monitor your RAM usage. It runs in the status bar and displays currently available “Free” RAM. Clicking it shows a breakdown of how RAM is used by the system, separated into four sections: Free, Inactive, Active & Wired. It can display both absolute values in GB and percentages of total memory available, configurable in settings.
CoreGraphicsis used for dynamically drawing graph images for displaying in the detail view
machheaders for getting access to system information and RAM usage