tl;dr: Os8088 is a Mac-like graphical OS for 8086-era PCs (XT/286/386) featuring pre-emptive or cooperative multitasking, a dock, windowed multi-instance apps, and a heap-based memory model where programs load into their own segments at offset zero. It ships with a suite of built-in applications including a Markdown writer, MOD tracker, Mandelbrot explorer, bitmap paint, FM piano, Sound Blaster recorder, Minesweeper, Solitaire, and Arkanoid. Live kernel state (scheduler mode, task CPU usage) is read directly by system utilities rather than cached.