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 user-friendly virtualization tool that supports a wide range of guest operating systems with good performance and features like USB support and snapshots, making it ideal for casual users. In contrast, Bochs is a more complex, open-source emulator that offers deep customization and the ability to emulate legacy systems, but it has a steeper learning curve and less performance compared to Portable VirtualBox.