| ID | Name | Type |
|---|---|---|
| #11650 | Procom Software | P |
| #11651 | Procomm Systems | Z |
| #19724 | Procompe | P |
| #11652 | Producciones Cicero S.A. | Z |
| #11653 | Productive Playtime | Z |
| #11654 | Proein S.A. | Z |
| #11655 | Proein Soft Line | Z |
| #18000 | Prof. Frank H. George | + |
| #11657 | Profesor Locaten | ? |
| #11658 | Professional Software | Z |
| #11659 | Professional Software Users | Z |
| #11660 | Profisoft GmbH | Z |
| #11661 | Profisoft [1] | P |
| #11662 | Profisoft [2] | Z |
| #11663 | Profsoft | Z |
| #21286 | Profsoft [2] | P |
| #11664 | Prog Master | ? |
| #21635 | Progral | P |
| #11665 | Program Direct | P |
| #11666 | Program Factory | S |