The Secret Operating Systems You Were Never Meant to Use

You know Windows. You know Linux. Now meet the OSes they don’t want you to touch.

Most people only ever interact with a sanitized surface. But behind the curtain lives a wild ecosystem of forgotten, forbidden, and experimental operating systems—built by rebels, tinkerers, and visionaries.

Explore:

• Mythical and misunderstood: TempleOS, SerenityOS, Plan 9, BeOS, AmigaOS, SkyOS.
• Security-first outliers: Qubes OS, Genode, Redox, SeL4, Singularity, Barrelfish.
• Retro-futurist visions: NeXTSTEP, MINIX, Haiku, DR-DOS, CP/M, GEOS, MorphOS.
• Research lab relics: Multics, TENEX, Mach, Fuchsia, Exokernel, Amoeba, Spring.
• Stripped-down madness: MenuetOS, KolibriOS, Inferno, Phantom OS, A2, ToaruOS.
• Embedded + real-time beasts: FreeRTOS, ChibiOS, Contiki, TinyOS, HelenOS.

These aren’t just alt-OSes. They’re alt-realities.

If you’ve ever wondered what computing could look like if it weren’t monopolized—this is your underground tour.