1.microsoft / MS-DOSArchivedThe original sources of MS-DOS 1.25, 2.0, and 4.0 for reference purposesms-dosAssemblyMIT32K total4.7K forks+55 starsfrom 32,203 · score 4.03
2.icebreaker / floppybirdFloppy Bird (OS)qemuassemblygamedosbootos+5 moreAssemblyMIT935 total62 forks+1 starsfrom 934 · score 0.69