Hard Drive tools:

Windows:

Acronis Drive Monitor

Seagate tool

WD tool

Crucial Storage Executive

Mac:

SMART Reporter

SSD Reporter

WD tool

Anti-Virus, Adware, Spyware Tools:

Windows:

Malwarebytes 

Avast

Spybot

Spybot Anti beacon

NordVPN

Mac:

Malwarebytes 

Diagnostic tools:

Windows:

CPU-Z

BSOD viewer

Dead Pixel Test

Browsers:

Windows:

Chrome

Firefox

Brave Browser

Mac:

Chrome

Firefox

Brave Browser

Other Tools:

7-Zip

Gaming:

Nvidia

AMD

Discord

Steam

Origin

UPlay

Epic Launcher

Battle.net

Xbox

Rockstar Launcher

Throttlestop

OBS: Open Broadcaster Software