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Below is a table of SPDs for OSF/1, Digital UNIX and Tru64 UNIX that are available online somewhere. The list is quite incomplete, but the SPD for any given version of Digital UNIX may be available as /DOCUMENTATION/POSTSCRIPT/Digital_UNIX_Operating_System_SPD.ps on the operating system install CD (this is the case for 3.2G, 4.0A, and 4.0F; in 5.1B the filename is different but in a similar location).
| Release | Date | SPD | Link | Notes |
| DEC OSF/1 1.2 | March 1993 | SPD 41.61.01 | ||
| DEC OSF/1 1.2A | SPD 41.61.02 | |||
| DEC OSF/1 1.3 | August 1993 | SPD 41.61.03 | ||
| DEC OSF/1 1.3A | SPD 41.61.04 | |||
| DEC OSF/1 2.0 | March 1994 | |||
| DEC OSF/1 2.0A | April 1994 | |||
| DEC OSF/1 3.0 | August 1994 | |||
| DEC OSF/1 3.0A | September 1994 | |||
| Digital UNIX 3.2 | February 1995 | SPD 41.61.09 | ||
| Digital UNIX 3.2C | July 1995 | |||
| Digital UNIX 3.2D-1 | January 1996 | |||
| Digital UNIX 3.2F | June 1996 | |||
| Digital UNIX 3.2G | August 1996 | SPD 41.61.15 | PDF PS TXT | |
| Digital UNIX 4.0 | March 1996 | SPD 41.61.13 | usenet | |
| Digital UNIX 4.0A | September 1996 | SPD 41.61.14 | PDF PS TXT | |
| Digital UNIX 4.0B | December 1996 | SPD 41.61.16 | ||
| Digital UNIX 4.0C | April 1997 | SPD 41.61.18 | From 25-MAY-1994 onwards | |
| SPD 41.61.19 | From 25-MAY-1994 through 08-MAY-1994 | |||
| Digital UNIX 4.0D | December 1997 | SPD 41.61.20 | HTML | |
| Digital UNIX 4.0E | November 1998 | SPD 41.61.21 | ||
| Tru64 UNIX 4.0F | April 1999 | SPD 41.61.22 | TXT | |
| Tru64 UNIX 5.0 | July 1999 | |||
| Tru64 UNIX 5.0A | April 2000 | SPD 70.70.02 | HTML | |
| Tru64 UNIX 4.0G | May 2000 | SPD 41.61.23 | PDF HTML | |
| Tru64 UNIX 5.1 | September 2000 | SPD 70.70.03 | ||
| Tru64 UNIX 5.1A | September 2001 | |||
| Tru64 UNIX 5.1B | September 2002 |