| Similarity | Rank | |
|---|---|---|
| Fortran | 0.864 | 62907 |
| UNIX | 0.823 | 26761 |
| Smalltalk | 0.821 | 91348 |
| Unix | 0.815 | 21500 |
| MS-DOS | 0.809 | 68770 |
| Lisp | 0.797 | 46662 |
| mainframe | 0.785 | 36557 |
| LANSA | 0.780 | 69880 |
| object-oriented | 0.777 | 47487 |
| Tcl | 0.773 | 95551 |
| Multics | 0.772 | 98254 |
| NET | 0.772 | 10312 |
| mainframes | 0.766 | 79410 |
| RDBMS | 0.766 | 85633 |
| DOS | 0.761 | 25920 |
| SGML | 0.760 | 89035 |
| J2EE | 0.759 | 64291 |
| Perl | 0.757 | 20863 |
| DBMS | 0.755 | 72756 |
| assembler | 0.754 | 57311 |
| JAVA | 0.753 | 81327 |
| VB6 | 0.753 | 76305 |
| x86 | 0.751 | 39287 |
| DB2 | 0.749 | 54870 |
| SQL | 0.748 | 8608 |