Kiwi application monitor - Kiwi application monitor is a small program which lets you monitor your applications/processes, Windows and User activity.
CPU-Z - CPU-Z is a freeware that gathers information on some of the main devices of your system : Processor name and number, codename, process, package, cache levels.
Battle Encoder Shirase - Software that controls per-process CPU usage: an “active” software CPU cooler.
Udev Discover - A helping tool for udev testers, coders, hackers and consumers.
Processes - https://www.oneperiodic.com/products/processes/
Speccy - Speccy - find the details of your computer's specs. Great for spotting issues or finding compatible upgrades. Download the latest version free.