QEMU is a generic and open source machine emulator and virtualizer. QEMU works like VMWare, VirtualBox and etc.
You can download its installation file at https://www.qemu.org/download/
On Windows 10, you will see following diagram when you install QEMU.
You will surprisingly find nothing on the program group except a link to the documentation.
QEMU does not provide VM manager like VMWare, VirtualBox and etc - meaning it requires to run the necessary things like command line interface.
Below is an example to create an image by command line interface.
$ qemu-img create windows.raw 20G $ qemu-system-x86_64 -m 4G -cpu host -smp sockets=1,cores=2,threads=2 -cdrom Win10_1903_V1_Korean_x64.iso -drive file=windows.raw,format=raw -enable-kvm