Free and open-source software (edit)

https://techrrival.com/best-open-source-softwares/

https://www.techradar.com/best/best-open-source-software

https://en.wikipedia.org/wiki/List_of_free_and_open-source_software_packages

https://www.thesimpledollar.com/save-money/30-essential-pieces-of--for-windows/