AVG PC TuneUp - Peak performance for your PC. Keeps it going for longer. - More Speed Turbo Mode
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
BleachBit - When your computer is getting full, BleachBit quickly frees disk space.
LightShot - The fastest way to take a customizable screenshot.