ClassGhost is a small utility that can redefine class files within a running JVM. ClassGhost allows you to directly inject the newly compiled class files in to the VM without interrupting the running application. Works with multiple as well as remote VMs
raw2vmdk is an OS independent Java utility that allows you to mount raw disk images, like images created by "dd", using VMware, VirtualBox or any other virtualization platform supporting the VMDK disk format.