| .. |
| auth | Plan 9 from Bell Labs Fourth Edition 2002-12-12 | 23 years ago |
| ppc | Plan 9 from Bell Labs Fourth Edition 2013-01-29 | 13 years ago |
| proto | Plan 9 from Bell Labs Fourth Edition 2013-11-16 | 12 years ago |
| usb | Plan 9 from Bell Labs Fourth Edition 2011-12-14 | 14 years ago |