There is no much sense to run OS in VMs under Xen for security purposes on the modern x86 machines with AMD PSP / Intel ME. You have to completely get rid of PSP/IntelME in the first place, to make this configuration as secure as promised, but if you got rid of PSP/IntelME (say, on old motherboard with coreboot flashed instead of BIOS/UEFI), then Xen VM will add nothing to the security in comparison of typical Linux with "unsafe" apps like browser running in regular Linux containers where they don't see your real filesystem with your private data.
Unfortunately, there are no x86 hardware that will allow to comfortably browse modern Web and at the same time could be completely cleaned from PSP/IntelME. Only dozen years old hardware could function more or less normally without that crap, but you will get laggy modern browser.
It is basically opensource Windows-compatible OS. Still not ready yet. However, if you don't need anything more than office tools, it is possible to use it.
Edit: oh, i see QubeOS is actually the hypervisor right? Like vmware or proxmox and such?.
No, it's another kind. VMWare and Proxmox are user-mode VMs that runs inside some OS. Qubes OS is another type of virtualisation hypervisor (Xen, as I get from their docs) which is run on bare hardware and usually have one dom0 OS VM dedicated to hypervisor control and domU OSes to run apps.
There is no much sense to run OS in VMs under Xen for security purposes on the modern x86 machines with AMD PSP / Intel ME. You have to completely get rid of PSP/IntelME in the first place, to make this configuration as secure as promised, but if you got rid of PSP/IntelME (say, on old motherboard with coreboot flashed instead of BIOS/UEFI), then Xen VM will add nothing to the security in comparison of typical Linux with "unsafe" apps like browser running in regular Linux containers where they don't see your real filesystem with your private data.
Unfortunately, there are no x86 hardware that will allow to comfortably browse modern Web and at the same time could be completely cleaned from PSP/IntelME. Only dozen years old hardware could function more or less normally without that crap, but you will get laggy modern browser.
What about ReactOS?
Thats an opensource win32api clone. Im not that technical about coding, but i guess you probably know that os and its pro's and con's
Edit: oh, i see QubeOS is actually the hypervisor right? Like vmware or proxmox and such?.
It is basically opensource Windows-compatible OS. Still not ready yet. However, if you don't need anything more than office tools, it is possible to use it.
No, it's another kind. VMWare and Proxmox are user-mode VMs that runs inside some OS. Qubes OS is another type of virtualisation hypervisor (Xen, as I get from their docs) which is run on bare hardware and usually have one dom0 OS VM dedicated to hypervisor control and domU OSes to run apps.