| ID | Name | Type |
|---|---|---|
| #14 | 2DOX | ? |
| #23154 | 2L8 Software | P |
| #15 | 39 Steps | Z |
| #17 | 3CCorp | Z |
| #20262 | 3DSchuminator | - |
| #18 | 3PSOFT | Z |
| #19 | 3SC | ? |
| #20 | 3T Software | Z |
| #21 | 4-Sight Computing | Z |
| #20005 | 40crisis | - |
| #22 | 48K | Z |
| #16464 | 4CLRC SOFT | Z |
| #17002 | 4Mat Computing | A |
| #23 | 4Mation Educational Resources Ltd | Z |
| #18031 | 4OCrisis | - |
| #21695 | 4mat | + |
| #24 | 4th Dimension Computer Software | Z |
| #26 | 4th Dimension [RU] | Z |
| #25 | 4th Dimension [UK] | P |
| #18597 | 4thRock | - |