software platform for managing hardware and software resources
software platform for managing hardware and software resources
Yes, there are operating systems like Android, iOS, and various mobile platforms that differ from Windows, Mac OS, and Linux/Unix.
I found a reverse-engineered version of Windows 2000. Just search for its name online.
Microsoft Basic isn't an operating system. It runs alongside MS-DOS, Reactos (based on Windows NT kernel, supports some programs), Atari TOS, MiNT, AmigaOS (still supported, works on Raspberry Pi), RISC OS (functions well on Raspberry Pi), Haiku OS, and Singularity (a C#-based prototype OS).