| ID | Name | Type |
|---|---|---|
| #13662 | Spidersoft [1] | Z |
| #13663 | Spidersoft [2] | Z |
| #13664 | Spike | - |
| #13665 | Spinal | ? |
| #16648 | SpinalSoft | Z |
| #13666 | Spindrift Software | Z |
| #13667 | Spinnaker Software Corporation | P |
| #13668 | Spiral | Z |
| #13669 | Spiral Software | Z |
| #13670 | Spiridonenko MV | U |
| #13671 | Spirit | - |
| #13672 | Spirit Instruments | Z |
| #13673 | Spirit Software | P |
| #13674 | Spitting Image Productions Ltd | Z |
| #23169 | Splatter Soft | P |
| #16526 | Splinter | - |
| #19938 | SplinterGU | - |
| #13675 | Spock | ? |
| #13676 | Spoof Software | Z |
| #17781 | Spool | D |