os8088: A real‑mode Mac‑style GUI OS runs on vintage 8088 PCs
os8088 boots from a floppy into a fully windowed desktop, offering overlapping windows, menus and pre‑emptive multitasking on an original IBM PC/XT with just 256 KB RAM. Written in real‑mode NASM assembly (AI‑assisted) and open‑sourced on GitHub, it proves a modern GUI is possible on 8088 hardware.