macOS gives you no easy way to check how hot your Mac's components run or how much power they draw. Stats puts those readings in the menu bar. It's free and open source.
TG Pro shows real-time temperatures for your Mac's CPU, GPU, drives, battery and more, and gives you full control over its fans. It's ideal when your Mac runs hot or loud under load, or when you want to catch drive or battery
See exactly what your Mac is doing, in real time. iStatistica Pro puts CPU, memory, battery, network, and storage stats in one place, plus web access to check them from any device on your network.
iStat Menus lets you monitor your system right from the menubar. Included are 8 menu extras that let you monitor every aspect of your system. iStat Menus 6 sports a completely new design — new menubar icons, new dropdown menus, and the