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 versatile tool for running Windows applications across different platforms without installation, while WineBottler is tailored for macOS users, providing a smoother integration of Windows applications with the macOS environment. Both have their strengths, but the choice depends on the user's operating system and specific application needs.