VMware vSphere Hypervisor Alternatives for Windows

Proxmox VE is a leading open-source platform for enterprise virtualization. It integrates KVM and LXC, offering a unified solution for managing virtual machines and containers via a central web interface.

Microsoft Hyper-V Server is a dedicated, lean hypervisor-based virtualization platform for creating and managing virtual machines. It provides core virtualization capabilities including live migration and clustering, offering a robust foundation for datacenter and cloud environments.

Portable-VirtualBox allows you to run virtual machines directly from a USB drive without requiring an installation on the host computer. It provides a convenient and portable way to access different operating systems and applications.

Citrix XenServer is a powerful, open-source virtualization platform designed for managing virtualized server infrastructures. It provides robust features for creating, deploying, and managing virtual machines and containers, making it a popular choice for data centers and cloud environments. XenServer offers high availability, live migration capabilities, and integration with various storage and networking solutions.

Bochs is a highly portable, open-source IA-32 and x86-64 IBM PC emulator and debugger. Primarily written in C++, it allows users to run various operating systems and software designed for x86 architectures on different platforms, offering a low-level emulation of hardware components.