| Similarity | Rank | |
|---|---|---|
| UNIX | 0.984 | 26761 |
| Linux | 0.891 | 5281 |
| BSD | 0.875 | 45167 |
| MS-DOS | 0.871 | 68770 |
| unix | 0.869 | 63175 |
| Cygwin | 0.867 | 92882 |
| MacOS | 0.862 | 63038 |
| FreeBSD | 0.858 | 43511 |
| x86 | 0.847 | 39287 |
| POSIX | 0.831 | 64886 |
| Perl | 0.830 | 20863 |
| RedHat | 0.828 | 89416 |
| OSes | 0.827 | 84328 |
| command-line | 0.825 | 44371 |
| NetBSD | 0.823 | 87686 |
| executables | 0.816 | 72615 |
| COBOL | 0.815 | 76421 |
| Win32 | 0.814 | 47010 |
| GNU | 0.814 | 27348 |
| Emacs | 0.809 | 46343 |
| linux | 0.809 | 24945 |
| Tcl | 0.807 | 95551 |
| AIX | 0.806 | 75664 |
| Debian | 0.805 | 25589 |
| OSX | 0.805 | 37107 |