Rufus
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!
Rufus can also remove Windows 11’s requirements like Secure Boot and TPM 2.0, 4GB+ RAM and 64GB+ disk, and an online Microsoft account.
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).
Provides ongoing improvements to the Windows Operating System (OS), includes previous updates delivered over Windows Update as well as continuing incremental updates to the Windows 7 platform (DVD iso)
macOS Transformation Pack greatly resembles real macOS from Windows side.
Share photos, videos, music, files, documents and more between all of your devices. File sharing from phone to PC, phone to phone, PC to phone, PC to tablet.
Easily upgrade your Windows 7 or Windows 8 system to Windows 10 for free, with the Microsoft Media Creation Tool!
WinRAR is a powerful archive manager that is compatible with many compression formats. It is commercial software, but you can use it for free.