Multipass provides a command-line interface to launch, manage, and utilize instances of Linux.
Multipass is a lightweight VM manager for Linux, Windows, and macOS. It is geared for developers who want a fresh Ubuntu environment via a single command. It uses KVM on Linux, Hyper-V on Windows, and HyperKit on macOS to run the VM with minimal overhead. It can also use VirtualBox on Windows and macOS. Multipass will fetch images for you and keep them up to date.
Since it supports metadata for cloud-init, you can simulate a small cloud deployment on your laptop or workstation. You can initialize instances through cloud-init as you usually would on Ubuntu clouds; pass the configuration to multipass launch --cloud-init.
Sandboxie lets you run programs in an isolated space which will prevent them from making permanent changes to other programs and data on your computer. Sandboxie-Plus also available.
Phoenix OS is an Android-based operating system that you can install on your hard drive or as a bootable DVD or thumb drive. Also available as a executable here.
VMware Player is an easy-to-use application that will offer users the possibility to run any virtual machine on their computer—used by MajorGeeks to test software safely.
VirtualBox is a free virtualizer that extends your existing computer's capabilities so that it can run multiple operating systems in virtual machines at the same time. VirtualBox Extension Pack also available.
Toolwiz Time Freeze is a free instant system protection tool that will protect your system from any unwanted changes and malicious activity in low disk level. Toolwiz also has a complete, all in one suite called Toolwiz Care.