Qubes OS

Qubes OS is a security-focused distro using Xen-based virtualization to isolate computing tasks into separate “qubes.” This compartmentalization ensures that if one qube (e.g., web browsing) is compromised, the rest of the system remains safe. It organizes different trust levels (personal, work, untrusted) in color-coded windows. Despite multiple VMs, Qubes aims for a relatively seamless desktop experience. It’s widely praised by security experts for mitigating zero-day threats. While resource-intensive and best on powerful hardware, Qubes OS is free and open source, ideal for those prioritizing security above all.