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

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

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

bochs

Bochs is a highly portable open source IA-32 (x86) PC emulator written in C++, that runs on most popular platforms. It includes emulation of the Intel x86 CPU, common...

Free Open Source Windows Linux AmigaOS MorphOS

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

Prayaya V3

Not only a portable launcher, but also a mini virtual operating system. Prayaya V3 could be installed on any USB device or local harddisk. It helps you take your...

Free Windows

WorldDesk

Currently in Beta: "WorldDesk leverages a unique patent-pending abstraction layer to decouple all aspects of a user's Microsoft Windows workspace from the underlying OS and device.

Commercial Windows

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

Ceedo Personal

Ceedo is unique virtualization technology creates a portable virtual desktop, which launches on any Windows host PC with no need to pre-install any software, drivers or...

Commercial Windows

FAUMachine

FAUmachine is a virtual machine, similar in many respects to VMWare[tm], QEMU or Virtual PC[tm]. What distinguishes FAUmachine from these other virtual machines, are the...

Free Open Source Linux