VirtualBox
VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as home use.
+ Professional-grade Virtualization for PCs: Simultaneously run a wide variety of Windows versions, Linux distributions, web stacks, database configurations, and...
+ professionalgrade virtualization for pcs:simultaneously run a wide variety of windows versions, linux distributions, web stacks, database configurations, and multitier cloud environments on a single pc with the power and performance you need for web development, qa testing, product demonstrations, and more.
+ simplify your routine:improve your productivity and the way you work everyday so that you can focus on your job, not on your virtualization software. easily move a physical machine to a virtual machine using parallels transporter, an integrated tool to make migrating to a vm a snap. brilliantly handle usb devices, easily configure virtual networking, and automate routine tasks. improve your user experience with the ability to move between environments, share files, cut and paste information and even drag and drop between windows systems.
Productivity Utilities Networking and Admin
Discontinued virtualization virtual-machine operating-system virtual-machines
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 Pro is a commercial hypervisor that allows users to create and run virtual machines on one computer.
Commercial
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
Parallels Desktop gives Mac users the ability to run Windows, Linux or any other operating system and their critical applications at the same time as Mac OS X on any Intel-powered Mac Pro, iMac, Mac Mini, MacBook or MacBook Pro.
Commercial
Seamlessly run your favorite Windows applications and devices, on any Intel-based Mac.
Commercial Mac OS X
KVM (for Kernel-based Virtual Machine) is a full virtualization solution for Linux on x86 hardware containing virtualization extensions (Intel VT or AMD-V). It consists of a loadable kernel module, kvm.
Free Open Source Linux
VMware vSphere Hypervisor ( based on ESXi ) is a free bare-metal hypervisor that virtualizes servers so you can consolidate your applications on less hardware.
Commercial Windows Linux
Microsoft® Hyper-V™ Server 2008 R2 is a stand-alone product that provides a reliable and optimized virtualization solution enabling organizations to improve server utilization and reduce costs.
Commercial Windows Linux
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 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 is the indispensable tool for administrative access to remote computers.
Commercial Windows
UCS Virtual Machine Manager (UVMM) is an easy-to-use and powerful administration tool for KVM.
Free Open Source Linux Univention Corporate Server
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
The VMWare Disk Mount utility allows you to mount a VMDK file as a drive. VMWARE distributes a command line utility with no graphical interface (GUI). This is the graphical interface for the VMWare Disk Mount.
Free Windows
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