PRoX2011 / x16-PRos

Simple 16 bit (real mode) operating system writen in NASM from scratch

ZZX2012 / ZZXOS

ZZX OS is a minimal microkernel written in 16-bit x86 assembly (Intel syntax, NASM) for bare-metal x86 architecture. Running directly in Real Mode without OS or C runtime dependencies, it integrates an MBR bootloader, POST engine, animated boot logo, TUI dual-pane shell, and a VGA Mode 13h 3D wireframe graphics engine.

Made-In-Basement / ember

An operating system written from scratch: boot sector, FAT filesystem, DOS-compatible interrupts, sound, a 32-bit runtime and a graphical desktop