Kiwi application monitor - Kiwi application monitor is a small program which lets you monitor your applications/processes, Windows and User activity.
Autoruns - See what programs are configured to startup automatically when your system boots and you login.
Battle Encoder Shirase - Software that controls per-process CPU usage: an “active” software CPU cooler.
CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
Processes - https://www.oneperiodic.com/products/processes/
BleachBit - When your computer is getting full, BleachBit quickly frees disk space.