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
VMware Workstation Player is a more feature-rich virtualization solution with robust performance and advanced capabilities such as snapshot and cloning support, making it suitable for power users. In contrast, Portable VirtualBox is lightweight and portable, ideal for users seeking an open-source solution that is easy to set up and run without installation.