FreeDOS

FreeDOS is a free, open-source operating system that provides complete compatibility with MS-DOS, allowing users to run classic DOS applications, play retro games, and execute legacy business software on modern hardware. First released in 1998, it supports a wide range of real and emulated x86 systems, includes numerous useful utilities and command-line tools, and is fully capable of booting from a USB drive or running inside virtual machines. FreeDOS remains popular among developers, retro-computing enthusiasts, and system administrators who need a lightweight, DOS-compatible environment for tasks like firmware updates, embedded systems, or old software preservation.

FreeDOS official website: https://freedos.org/

freedos.org : https://freedos.org/download/

www.ibiblio.org : https://www.ibiblio.org/pub/micro/pc-stuff/freedos/

Click the list item to open the download page