GoKawiilUnoDOS ports a single codebase across 22 machines, from IBM PC/XT to modern 64-bit PCs
UnoDOS is a graphical operating system family built from one shared source tree, originally a 16-bit real-mode GUI OS written in x86 assembly that fit a kernel, window manager, two filesystems and applications onto a single floppy disk. It has since been ported to home computers, consoles, handhelds, single-board computers and a phone, with its flagship version, pc64, running bare-metal on modern 64-bit PCs with its own drivers, network stack, browser, office suite, compiler and hypervisor. Prebuilt images and a verification ledger (PLATFORMS.md) documenting real-hardware versus emulator-only support are published on the project's releases page.