| Name |
Size |
UI |
Family |
Arch |
Status |
Source |
Lang |
Medium |
Notes |
| Arch Linux | 15+ MB |
| Linux | 32-bit | Modern | Open-source | C | 9pfs | Xorg, Firefox, various compilers and more |
| Damn Small Linux | 50 MB |
| Linux | 32-bit | Historic | Open-source | C | CD | 4.11.rc2 with Firefox 2.0 |
| Buildroot Linux | 4.9 MB |
| Linux | 32-bit | Modern | Open-source | C | bzImage | Lua, ping, curl, telnet |
| FreeBSD | 16+ MB |
| BSD | 32-bit | Modern | Open-source | C | HD | FreeBSD 12.0 |
| OpenBSD | 11+ MB |
| BSD | 32-bit | Modern | Open-source | C | HD | OpenBSD 6.6 |
| FiwixOS | 15+ MB |
| Unix-like | 32-bit | Modern | Open-source | C | HD | With Doom |
| SerenityOS | 16+ MB |
| Unix-like | 32-bit | Modern | Open-source | C++ | HD | Web browser, various games and demos |
| Haiku | 41+ MB |
| BeOS | 32-bit | Modern | Open-source | C++ | HD | Networking (WebPositive), OCaml, 2048, NetHack |
| Tiny Aros | 17+ MB |
| AmigaOS | 32-bit | Modern | Open-source | C | CD | AmigaOS-like graphical OS |
| ReactOS | 17+ MB |
| Windows-like | 32-bit | Modern | Open-source | C++ | HD | QtWeb, LBreakout2, OpenTTD, Bochs, TCC |
| Windows 1.01 | 0.7 MB |
| Windows | 16-bit | Historic | Proprietary | ASM, C | Floppy | Reversi, Paint |
| Windows 95 | 19+ MB |
| Windows | 32-bit | Historic | Proprietary | ASM, C | HD | Age of Empires, FASM, POV-Ray, Hover! |
| Windows 2000 | 23+ MB |
| Windows | 32-bit | Historic | Proprietary | C++ | HD | IE 5, Pinball |
| MS-DOS 6.22 | 2.4+ MB |
| DOS | 16-bit | Historic | Proprietary | ASM | HD | Doom, Sim City, OCaml 1.0, Turbo C and more |
| FreeDOS | 0.6 MB |
| DOS | 16-bit | Modern | Open-source | ASM, C | Floppy | nasm, vim, debug.com, Rogue, various demos |
| KolibriOS | 1.3 MB |
| Custom | 32-bit | Modern | Open-source | ASM | Floppy | Various apps, games and demos |
| QNX 4.05 | 1.4 MB |
| Custom | 32-bit | Historic | Proprietary | C | Floppy | 1999 demo disk |