| DEC PDP-1 soft. |  Cube Display + Matchbox Display No. 89 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-7 soft. | DECPUN No. 7-10 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-7 soft. | DECtape Copy Routine No. 7-20 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-5 soft. | Double Precision Signed Decimal Input/Output Subroutine No. 5-39 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-7 soft. | DUMP ND 180 + FDUMP ND 180 No. 7-19 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-7 soft. | ENLOSS No. 7-24 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-4 soft. | FISP No. 4-13 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-5 soft. | FORPLOT No. 5-31 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-7 soft. | FORTRAN Patch for EAE Arithmetic No. 7-15 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-1 soft. | FORTRAN Ver.3 No. 82.3 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-5 soft. | FTYPE No. 5-38 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-5 soft. | GENPLOT No. 5-30 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-5 soft. | ICS One Page DECtape Routines No. 5-40 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-7 soft. | ISENSE No. 7-14 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-7 soft. | LEGFIT No. 7-22 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-6 soft. | LPFOL No. 6-2 | 1966 | DECUS Digital Equipment Computer Users' Society |
| LINC soft. | Manuscript Compressed Print No. L-1 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-5 soft. | Memory Halt No. 5-34 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-5 soft. | Modified Binary Loader MK IV No. 5-48 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-6 soft. | Number No. 6-4 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-5 soft. | Octal Memory Dump Revised No. 5-36 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-7 soft. | OUTFLT No. 7-23 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-8 soft. | PAL III Modifications No. 8-28 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-5 soft. | PALEX No. 5-55 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-7 soft. | Paper Tape Verifier No. 7-18 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-7 soft. | POSPNT No. 7-11 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-1 soft. | Precision Hypotenuse No. 86 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-7 soft. | Punch Output Package No. 7-12 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-6 soft. | PUNCH No. 6-3 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-7 soft. | Reaction Kinematics No. 7-21 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-8 soft. | Relativistic Dynamics No. 8-49 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-5 soft. | Relocate and Pack Programs No. 5-32 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-5 soft. | Remote & Time-Shared System No. 5-45 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-7 soft. | Single Level Breit Wigner Fit No. 7-16 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-5 soft. | Tape to Memory Comparator No. 5-33 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-6 soft. | TIMEF4 No. 6-5 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-8 soft. | Tiny Tape Editor No. 8-52 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-5 soft. | Transfer II No. 5-37 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-1 soft. | Typewriter Time Test No. 88 | 1966 | DECUS Digital Equipment Computer Users' Society |
| DEC PDP-5 soft. | Unsigned Octal - Decimal Fraction Conversion No. 5-43 | 1966 | DECUS Digital Equipment Computer Users' Society |
