While they are usually limited in some regards, options to install software or make persistent changes are not supported, they may help you relive memories of the past or simply explore how Windows was ten, twenty or even thirty years ago. Programmers have created browser-based emulators for various Microsoft operating systems that you can load at any time without having to install and set up those operating systems first before you can do so. If you just want to relive memories of the past or check out how things have changed in recent years, emulation may be an better option.
