Xen Project is a hypervisor using a microkernel design, providing services that allow multiple computer operating systems to execute on the same computer hardware concurrently. Developed by Citrix
License: Open Source
Bochs is a versatile emulator for x86 architecture that provides high configurability but has performance limitations, making it suitable for development and testing. In contrast, Xen is a robust Type-1 hypervisor designed for efficient virtualization with strong isolation, making it ideal for production environments.