| Similarity | Rank | |
|---|---|---|
| ultrix | 0.873 | 25945 |
| hp-ux | 0.865 | 21501 |
| unixware | 0.859 | 17558 |
| openvms | 0.857 | 31561 |
| db2 | 0.856 | 20259 |
| accell | 0.855 | 42902 |
| sunos | 0.855 | 31967 |
| nfs | 0.847 | 24563 |
| multi-processor | 0.842 | 26708 |
| dpx | 0.842 | 43758 |
| lu6 | 0.842 | 66217 |
| 6000 | 0.840 | 20635 |
| multiprocessing | 0.839 | 19009 |
| x-windows | 0.839 | 26557 |
| mvs | 0.838 | 22014 |
| mpx | 0.837 | 49934 |
| x-window | 0.837 | 33944 |
| encina | 0.836 | 27100 |
| mpe | 0.835 | 43668 |
| xenix | 0.834 | 53595 |
| sparcstations | 0.833 | 42090 |
| hyperdesk | 0.833 | 45095 |
| 9000 | 0.833 | 42537 |
| ipx | 0.830 | 29898 |
| microkernel | 0.828 | 20730 |