Portable-VirtualBox is a free and open source software tool that lets you run any operating system from a usb stick without separate installation. Developed by Runar Buvik
License: Open Source
Portable VirtualBox is a free, open-source virtualization solution that is lightweight and portable, making it ideal for users needing basic virtualization across different OS platforms. In contrast, Parallels Desktop offers a high-performance, user-friendly experience designed specifically for macOS users, but comes at a premium price and requires more system resources.