Nothing ever truly dies on the internet and these retro operating systems are live and kicking and ready for you to use.

after all – we've discovered a number of distinct examples that fall outside the usual bounds. Our list even includes a few true outsiders, independent operating systems built from the ground up ...

Although additional system modules may be loaded as needed, the main part, known as the "kernel" resides in memory (RAM) at all times. The operating system (OS) sets the standards for all ...

Once you're putting all the hardware pieces in place ... Whereas the rest of the operating systems on this list can be used ...