| Similarity | Rank | |
|---|---|---|
| iapx-86-based | 0.942 | 51691 |
| posix-compliant | 0.939 | 64621 |
| lsx | 0.936 | 66805 |
| mpx | 0.935 | 49934 |
| sinix | 0.933 | 63188 |
| irix | 0.932 | 59756 |
| svr4-based | 0.932 | 82341 |
| corp-motorola | 0.932 | 98979 |
| corp-based | 0.931 | 53022 |
| xenix | 0.930 | 53595 |
| 3000 | 0.930 | 72338 |
| uts | 0.928 | 43620 |
| 700s | 0.926 | 59326 |
| ca-unicenter | 0.925 | 41866 |
| unix-like | 0.924 | 84794 |
| hp9000 | 0.923 | 85960 |
| 600mp | 0.923 | 80822 |
| ctos | 0.922 | 75879 |
| pa-risc | 0.922 | 37089 |
| mips-based | 0.922 | 73144 |
| c400 | 0.921 | 94923 |
| mainframe-class | 0.921 | 66063 |
| recompiled | 0.920 | 50999 |
| informix-gateway | 0.919 | 91940 |
| penpoint | 0.919 | 68000 |