| Similarity | Rank | |
|---|---|---|
| sunsoft | 0.849 | 9412 |
| osf | 0.841 | 7357 |
| unix | 0.840 | 2232 |
| novell | 0.834 | 6745 |
| ibm | 0.833 | 2023 |
| solaris | 0.825 | 8564 |
| microsoft | 0.819 | 3711 |
| univel | 0.816 | 16260 |
| hewlett-packard | 0.815 | 5863 |
| ixi | 0.813 | 19694 |
| usl | 0.813 | 9106 |
| oems | 0.808 | 32235 |
| unixware | 0.806 | 17558 |
| aix | 0.802 | 10805 |
| amdahl | 0.801 | 20595 |
| mvs | 0.801 | 22014 |
| sgi | 0.800 | 29726 |
| uniforum | 0.795 | 19919 |
| xenix | 0.793 | 53595 |
| sunos | 0.791 | 31967 |
| ncr | 0.791 | 9965 |
| dce | 0.789 | 13660 |
| nextstep | 0.789 | 23499 |
| workgroups | 0.789 | 31708 |
| multi-processor | 0.788 | 26708 |