 Many ready-made virtual machines (VMs) which run on VMware Player, Workstation, and other virtualization software are available for specific purposes, either for purchase or free of charge.For example, a free Linux-based “browser appliance” with the Firefox browser installed is available that can be used for safe Web browsing; if infected or damaged, it can be discarded and replaced by a clean copy.VMs can be configured to reset after each use without the need to recreate from the original file.