x86

Domainatrix

domainatrix.freeservers.com

Assembly language OS for Intel/AMD x86 architecture made specifically for serving the Web, written originally for the programmer's personal interest and education after moving to t…

84 visits Jul 31, 2025 Details

Hactar

anywherebb.com

Claims: all new, no equivalent design in extant OSs, an adventure into something really different, an answer to a What if? Runs on 386+, system disk is floppy, kernel size 32Kb; ma…

351 visits Oct 10, 2025 Details

PM_SZ_OS

geocities.com

Protected mode, 32-bit OS for i486 CPUs and up, full network stack, supports several filesystems, paging, deferred procedure call support, and virtual multiple screens with differe…

429 visits Feb 9, 2024 Details

RDOS

rdos.net

Multi-process/threaded protected mode OS for all i386+ systems, written in all 16-/32-bit Assembly in TASM, fully PROMable so can port to embedded systems with no keyboard and/or s…

367 visits May 5, 2026 Details

ScottsNewOS

scottsnewos.sourceforge.net

Runs on i386+ compatible, working GUI even on 4 MB. Coded in Assembly, C. Brief description, download link. [Open Source, GPL]

51 visits Jul 23, 2024 Details

Synapse Operating Services

sourceforge.net

Protected mode, multitasking support, 32-bit; developed on x86-32, intended to run on x86-64 with some changes; DOS-like, but not fully compatible, use: to run ported DOS programs …

13 visits Apr 7, 2024 Details

The Mobius: SourceForge

mobius.sourceforge.net

A few screenshots, details, links.

397 visits Jul 5, 2025 Details