VirtualBox

VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as home use.

Free Open Source Windows Linux BSD Mac Solaris

Wine

Wine is a free, open source application for running Windows software on operating systems that are normally not supported. With Wine, you can install and run these applications just like you would in Windows.

Free Open Source Mac OS X Linux Android Android Tablet BSD

VMware Workstation Pro

VMware Workstation Pro is a commercial hypervisor that allows users to create and run virtual machines on one computer.

Commercial

VMware Workstation Player

VMware Workstation Player builds on the industry leading foundation of Workstation Pro, and delivers a streamlined user interface for creating and running operating systems and applications in a virtual machine.

Free Personal Windows Linux

QEMU

QEMU (short for "Quick EMUlator") is a free and open-source hosted hypervisor that performs hardware virtualization.

Free Open Source Mac OS X Windows Linux BSD

VMware Fusion

Seamlessly run your favorite Windows applications and devices, on any Intel-based Mac.

Commercial Mac OS X

CrossOver

CrossOver allows you to install many popular Windows applications and games on your Intel OS X Mac or Linux computer.

Commercial

virt-manager

The virt-manager application is a desktop user interface for managing virtual machines through libvirt. It primarily targets KVM VMs, but also manages Xen and LXC (linux containers).

Free Open Source Linux

Portable Virtualbox

portable-virtualbox is a free and open source software tool that lets you run any operating system from a usb stick without separate installation. it unpacks and adjusts the paths and configuration of virtualbox so it will run portably.

Free Open Source Windows

MobaLiveCD

MobaLiveCD is a freeware that will run your Linux LiveCD on Windows thanks to the excellent emulator called "Qemu".

Free Open Source Windows

ASG-Remote Desktop

ASG-Remote Desktop is the indispensable tool for administrative access to remote computers.

Commercial Windows

Porting Kit

Install Windows Games in Mac OS X natively and easily and for free with Wineskin technology.

Free Mac OS X

Deis

Deis is an open source PaaS that leverages Docker, CoreOS and Heroku Buildpacks to provide a private application platform that is lightweight and flexible.

Free Open Source Linux

Paragon Virtualization Manager

A powerful tool to help you easily migrate a Windows-based computer to a virtual environment (P2V) of a major virtualization software vendor, regardless of how or where the computer is being backed up.

Commercial Windows

Boxes

A simple GNOME 3 application to access remote or virtual systems. It is based on a design from Jon McCann and Jakub Steiner.

Free Open Source Linux

JPC

PC is the fast Java™ x86 PC emulator. Features: - 100% pure Java - Runs as an applet - Modular and customisable - Snapshot capability - Integrated debugger - Bulletproof security

Free Open Source Mac OS X Windows Linux Web

AQEMU

aqemu is gui to qemu and kvm emulators, written in qt4. the program have user-friendly interface and allows to set up the majority of qemu and kvm …

Free Open Source Linux BSD

Fig

Fast, isolated development environments using Docker.

Free Open Source Mac OS X Windows Linux

VMLite XP Mode

VMLite XP Mode offers similar functions as Microsoft Windows XP Mode, but doesn't require hardware virtualization. It allows you to run Windows XP at the same time from your desktop running on a different host operating system.

Commercial Windows