There are many alternatives to KVM (Kernel-based Virtual Machine) for Linux if you are looking for a replacement. The best Linux alternative is VirtualBox, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to KVM (Kernel-based Virtual Machine) and many of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to KVM (Kernel-based Virtual Machine) are QEMU, VMware Workstation Pro, VMware Workstation Player and Distrobox.
KVM is a kernel module that QEMU can use to speed up the emulation