This app is a free, DOS-compatible operating system in your browser.
You can use to play classic DOS games, run legacy software, QBasic, GW-Basic, or 16 bits programs in your browser.
You just need to zip-compress the files, folders to mount on this virtual DOS, and Just run the program like a real DOS. You can open a zipped file from local computer, Google Drive, and URLs.
This app supports saving the file from the virtual DOS drive to your computer.