Memory - Simple, lightweight memory monitor at Mac App Store analyse

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. Click it to show a breakdown of how your RAM is being used: Green - Free RAM Blue - Inactive RAM Yellow - Active RAM Red - Wired RAM It can display both absolute values in GB and percentages of total memory available. Configurable in settings.