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

PetiteCloud

PetiteCloud is a HyperVisor frontend for BSD. It has the following features: Support for bhyve (including linux support) and QEMU (software emulation only until the FreeBSD port of kqemu is fixed).

Free Open Source BSD

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

Parallels Workstation

+ Professional-grade Virtualization for PCs: Simultaneously run a wide variety of Windows versions, Linux distributions, web stacks, database configurations, and...

Commercial Windows Linux

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

QEMU Manager

qemu manager is an easy to use management tool for the open-source qemu emulator. it has a wealth of features for creating, managing...

Free Windows

VMLite Workstation

VMLite Workstation is a virtualization component, that allows you to run more than one operating system (OS) at the same time on a single physical computer. For example...

Commercial Windows

LXC Linux Containers

Containers which offer an environment as close as possible as the one you'd get from a VM but without the overhead that comes with running a separate kernel and...

Free Open Source Linux