https://www.virtualbox.org/
VirtualBox is a free and powerful virtualization software that runs on Windows, Linux, macOS, and Solaris. It supports many guest operating systems and has frequent updates and features.

https://azure.microsoft.com/en-us/resources/cloud-computing-dictionary/what-is-a-virtual-machine/
Learn how virtual machines (VMs) work, what they are used for, and what benefits they offer. Explore Azure VM resources, quickstarts, and migration guides.

https://developer.microsoft.com/en-us/windows/downloads/virtual-machines/
Download a virtual machine. We currently package our virtual machines for four different virtualization software options: VMWare, Hyper-V (Gen2), VirtualBox, and Parallels. These virtual machines contain an evaluation version of Windowsthat expires on the date posted. If the evaluation period expires, the desktop background will turn black, you

https://www.vmware.com/topics/glossary/content/virtual-machine.html
A virtual machine is a software-based compute resource that runs its own operating system and functions separately from other VMs on a physical host. Learn about the advantages, disadvantages, types and use cases of virtual machines, and how they differ from containers.

https://en.wikipedia.org/wiki/Virtual_machine
In computing, a virtual machine ( VM) is the virtualization or emulation of a computer system. Virtual machines are based on computer architectures and provide the functionality of a physical computer. Their implementations may involve specialized hardware, software, or a combination of the two. Virtual machines differ and are organized by

https://www.oracle.com/virtualization/technologies/vm/downloads/virtualbox-downloads.html
Oracle VM VirtualBox is a free and open source virtualization software that allows you to run multiple operating systems on your computer. Download the latest version of Oracle VM VirtualBox for Windows, Mac OS X, Linux and Solaris platforms, as well as the extension pack, source code and pre-built appliances.

https://www.vmware.com/products/workstation-player/workstation-player-evaluation.html.html.html
VMware Workstation Player is an ideal utility for running a single virtual machine on a Windows or Linux PC. Organizations use Workstation Player to deliver managed corporate desktops, while students and educators use it for learning and training. The free version is available for non-commercial, personal and home use.

https://cloud.google.com/learn/what-is-a-virtual-machine
A virtual machine (VM) is a digital version of a physical computer that can run programs and operating systems. Learn how VMs work, what they are used for, and how to use Compute Engine, Google Cloud's flexible VM offering.

https://www.virtualbox.org/wiki/Downloads
VirtualBox is a general-purpose full virtualizer for x86 hardware, targeted at server, desktop and embedded use.For a thorough introduction to virtualization and VirtualBox.

https://www.oracle.com/virtualization/virtualbox/
Oracle VM VirtualBox 7.0, available now, is packed with new features. These include integration with OCI, enhanced 3D support, an automated virtual machine (VM) builder, and full VM encryption. The new features will help organizations simplify the management of their VMs and help accelerate application deployment in the cloud and on-premises.

https://www.virtualbox.org/wiki/VirtualBox
Oracle VM VirtualBox is a versatile virtualization software supporting multiple operating systems with frequent updates and an extensive user manual.

https://azure.microsoft.com/en-us/products/virtual-machines/
Azure Virtual Machines offer secure, reliable, and scalable compute capacity for various workloads. Learn how to create, manage, and optimize VMs with Azure tools, services, and pricing options.

https://www.oracle.com/virtualization/technologies/vm/virtualbox.html
Oracle VM VirtualBox is an open source software that lets you run multiple operating systems on a single device. Learn about its features, benefits, technical papers, community resources and more.

https://www.digitaltrends.com/computing/best-virtual-machines/
Learn how to run multiple operating systems on your computer with virtual machines. Compare VMware, Parallels, VirtualBox, Gnome Boxes, and Boot Camp features, prices, and performance.

https://www.ibm.com/topics/virtual-machines
Learn what a virtual machine (VM) is, how it works, and why it is important for cloud computing. Explore the advantages and disadvantages of VMs, and the different types of hypervisors and VMs.

https://www.redhat.com/en/topics/virtualization/what-is-a-virtual-machine
A virtual machine (VM) is a simulated system that runs on a physical machine with its own resources. Learn how VMs work, what types of hypervisors are used, and how VMs relate to cloud computing and Red Hat OpenShift.

https://www.howtogeek.com/196060/beginner-geek-how-to-create-and-use-virtual-machines/
Learn what virtual machines are, why you might want to use them, and how to set up a VM app on Windows, Linux, or Mac OS X. Find out how to install and run different operating systems in a VM window on your desktop.

https://www.coursera.org/articles/what-is-a-virtual-machine
Learn what a virtual machine is and how it works. Explore the benefits and drawbacks of virtualization, and discover the jobs related to this technology.

https://learn.microsoft.com/en-us/virtualization/hyper-v-on-windows/quick-start/create-virtual-machine
Create a Virtual Machine with Hyper-V Manager. Open Hyper-V Manager by either pressing the Window's key and typing "Hyper-V Manager" or by finding Hyper-V Manager in your applications. In Hyper-V Manager, click Action > New > Virtual Machine to bring up the New Virtual Machine Wizard. Review the 'Before You Begin' content and click Next.

https://www.vmware.com/solutions/virtualization.html
VMware explains what virtualization is and how it works with virtual machines. Learn about the benefits, types and use cases of virtualization for servers, networks and desktops.

https://www.freecodecamp.org/news/what-is-a-virtual-machine-and-how-to-setup-a-vm-on-windows-linux-and-mac/
VirtualBox is an open source Virtual Machine program from Oracle. It allows users to virtually install many operating systems on virtual drives, including Windows, BSD, Linux, Solaris, and more. Since VirtualBox runs on Windows, Linux, and Mac, the process for setting up a virtual machine is pretty much the same in each operating system.

https://www.oracle.com/cloud/compute/virtual-machines/what-is-virtual-machine/
A virtual machine is a "computer made of software" that can run any software you'd run on a physical computer. Learn how virtualization works, its benefits, types, and how Oracle Cloud Infrastructure supports virtual machines and containers.

https://www.geeksforgeeks.org/virtual-machine/
Learn what a virtual machine is, how it works, and what are its types and uses. See examples of popular virtual machine software and FAQs on virtualization.