What software should everyone have installed on their computer?

[baziroll]

at first software i recommend is backup software like AOMEI Backupper macrium reflect Acronis and or other
user should detect which one more like and suits its need

Shadow Defender or rollback software

SpyShelter Firewall or eset internet security  or Malwarebytes anti malware and + malwarebyte antiexpolit

OSArmor

Regbak
Roboform
Zoom Player AIMP Mirillis Splash 2 MediaMonkey or other paid or free ones
Firefox(with some good extension) and or chromium
simplewall
one desktop&game  recorder or screenshot tool depend on needs like mirillis action bandicam Active Presenter
Image Uploader or HyperSnap pickpick or other
v..p..n
office if its rarly used then other can be used or Atlantis Word Processor
ramdisk if user have usage for it
BurnAware Professional power iso or ther burner
adgaurd
winrar powerarchiver 7zip
the bat
sync software
IDM
CCleaner old version ,jv16 PowerTools
for reading pdf SumatraPDF or browser  masterpdf editor or PDFCreator pdfelement... many options
Transmission-Qt
paint.net corel gimp.... many options here
telegram
search everything,deskrule