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).
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).
Windows 11 UX Pack transforms your Windows system 10 into Windows 11 with themes, wallpapers, and sound effects.
WinRAR is a powerful archive manager that is compatible with many compression formats. It is commercial software, but you can use it for free.
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!
Windows 8.1 Update can be seen as the final service pack for Windows 8 that provides several updates. It brings back the traditional start menu, re-enabling desktop users to navigate in the way they used to do.
Multi-format file archiver that can both pack and unpack 7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM.