Free virtualization software

open-source software for deploying and running of containerized applications

Oracle VirtualBox (formerly Sun VirtualBox, Sun xVM VirtualBox and InnoTek VirtualBox) is a hosted hypervisor for x86 and ARM virtualization developed by Oracle Corporation. VirtualBox was originally created by InnoTek Systemberatung GmbH, which was acquired by Sun Microsystems in 2008, which was in turn acquired by Oracle in 2010.

Xen (pronounced ) is a free and open-source type-1 hypervisor, providing services that allow multiple computer operating systems to execute on the same computer hardware concurrently. It was originally developed by the University of Cambridge Computer Laboratory and is now being developed by the Linux Foundation with support from Intel, Citrix, Arm Ltd, Huawei, AWS, Alibaba Cloud, AMD, Bitdefender and EPAM Systems.

The Quick Emulator (QEMU) is a free and open-source machine emulator and virtualizer. As a Virtual Machine Monitor (VMM) it supports a number of hypervisors including the Linux based Kernel-based Virtual Machine (KVM), Xen, MacOS's HVF, Window's Hyper-V and a number of others. It is also capable of emulating a number of Instruction set architectures on any supported host through its JIT binary translator known at the Tiny Code Generator (TCG). This allows it to emulate full systems or run individual programs compiled for one processor architecture on any other. QEMU supports the emulation of x

Script Creation Utility for Maniac Mansion Virtual Machine (ScummVM) is a set of game engine recreations. Originally designed to play LucasArts adventure games that use the SCUMM system, it also supports a variety of non-SCUMM games by companies like Revolution Software and Adventure Soft. It was originally written by Ludvig Strigeus. ScummVM is free software that is released under the terms of the GNU General Public License.

virtualization module in the Linux kernel

Linux distribution for server virtualization

chroot is a shell command and a system call on Unix and Unix-like operating systems that changes the apparent root directory for the current running process and its children. A program that is run in such a modified environment cannot name (and therefore normally cannot access) files outside the designated directory tree. The term chroot may refer to the system call or the command-line utility. The modified environment is called a chroot jail. thumb|Chroot: from Gentoo to Ubuntu

OpenJDK (Open Java Development Kit) is a free and open-source implementation of the Java Platform, Standard Edition (Java SE). It is the result of an effort Sun Microsystems began in 2006, four years before the company was acquired by Oracle Corporation. The implementation is licensed under the GNU General Public License 2 with a linking exception, preventing components that linked to the Java Class Library becoming subject to the terms of the GPL license. OpenJDK is the official reference implementation of Java SE since version 7, and is the most popular distribution of the JDK.

Linux Containers (LXC) is an operating system-level virtualization method for running multiple isolated Linux systems (containers) on a control host using a single Linux kernel.

OpenVZ (Open Virtuozzo) is an operating system-level virtualization technology for Linux. It allows a physical server to run multiple isolated operating system instances, supporting containerization, virtual private servers (VPSs) and virtual environments (VEs). OpenVZ is similar to Solaris Containers and LXC.

Software to run both Windows and Linux

libvirt is an open-source API, daemon and management tool for managing platform virtualization. It can be used to manage KVM, Xen, VMware ESXi, QEMU and other virtualization technologies. These APIs are widely used in the orchestration layer of hypervisors in the development of a cloud-based solution.

access remote or virtual systems

Linux feature to run a kernel virtualized as a user-space process

thumb|300px|Virtual Machine Manager (virt-manager) is based on libvirt and supports several [[Hypervisors]]

container system

Linux-VServer is a virtual private server implementation that was created by adding operating system-level virtualization capabilities to the Linux kernel. It is developed and distributed as open-source software.

bhyve (pronounced "bee hive", formerly written as BHyVe for "BSD hypervisor") is a type-2 (hosted) hypervisor initially written for FreeBSD. It can also be used on a number of illumos based distributions including SmartOS, OpenIndiana, and OmniOS. A port of bhyve to macOS called xhyve is also available.