KVM vs Proxmox
KVM (for Kernel-based Virtual Machine) is a full virtualization solution for Linux on x86 hardware containing virtualization extensions (Intel VT or AMD-V). It consists of a loadable kernel module, kvm.ko, that provides the core virtualization infrastructure and a processor specific module, kvm-intel.ko or kvm-amd.ko. KVM also requires a modified QEMU although work is underway to get the required changes upstream.
Proxmox Virtual Environment is a complete server virtualization management solution, based on KVM virtualization and containers. Powerful and easy to use - Complete server virtualization management with KVM and containers.