Name: iStat Mini
Mac Platform: Intel
OS version: 10.10 or later
More info: https://itunes.apple.com/app/id927292435
A mini system monitor for your Mac.
iStat Mini is a compact way to keep an eye on your CPU, memory pressure, disk usage and network activity. Simply slide out OS X Yosemite’s Notification Center to glance at the stats, then slide it back again to free up your workspace.