| Similarity | Rank | |
|---|---|---|
| X | 0.808 | 3089 |
| V. | 0.683 | 11566 |
| Z. | 0.675 | 28410 |
| X's | 0.674 | 50759 |
| PGP | 0.652 | 56050 |
| Macintosh | 0.647 | 22945 |
| OS | 0.633 | 5127 |
| MacOS | 0.632 | 63038 |
| Domino | 0.631 | 35458 |
| Note | 0.624 | 2182 |
| Z | 0.624 | 9634 |
| A. | 0.622 | 2897 |
| Y. | 0.612 | 26334 |
| B. | 0.610 | 4592 |
| H. | 0.608 | 5817 |
| BSD | 0.606 | 45167 |
| PowerPC | 0.606 | 76165 |
| Canonical | 0.604 | 57804 |
| V7 | 0.604 | 99683 |
| IOS | 0.603 | 44902 |
| VI | 0.603 | 13021 |
| V | 0.601 | 5295 |
| AIX | 0.600 | 75664 |
| V3 | 0.595 | 51403 |
| C | 0.595 | 1547 |