Everything
Everything can locate files and folders by name instantly. It has a clean and simple user interface, offers quick file indexing and searching and uses minimal system resources.
Ultimate Boot CD 5.3.9 assembles over 100 PC hardware diagnosis tools into one bootable CD to analyze and repair hard drives and to fix boot problems (CD iso).
Windows 11 UX Pack transforms your Windows system 10 into Windows 11 with themes, wallpapers, and sound effects.
Windows 11 24H2 is now available for everyone using Windows 11. If your device isn’t getting the feature update through Windows Update, you can force the installation via the Windows 11 Installation Assistant.
Hiren’s BootCD PE contains many tools you can use for analyzing, recovering and fixing your computer, even if the primary operating system can not be booted (CD iso).
macOS Transformation Pack greatly resembles real macOS from Windows side.
If you need to create bootable USB installation media from ISOs like Windows or Linux, Rufus can create these in a very easy way. Just select the ISO file and simply point to the USB drive, that's it!
WinRAR is a powerful archive manager that is compatible with many compression formats. It is commercial software, but you can use it for free.