| ID | Name | Type |
|---|---|---|
| #5939 | Hometown Software | Z |
| #17351 | Honey Computers | H |
| #5940 | Honey Soft | Z |
| #5941 | Honeyfold Software Ltd | Z |
| #5942 | Hong Special | ? |
| #22221 | Honorat Resurrecció i Ros | + |
| #5943 | HoopSnake Design | Z |
| #5944 | Hooy-Program | Z |
| #5945 | Hopfer | ? |
| #5946 | Hopkins & Laverty | Z |
| #5947 | Hoppenstedt & Co | Z |
| #5948 | Horacio Cassinelli | + |
| #5949 | Horizon Computers | Z |
| #5950 | Horn Abbot International Ltd | Z |
| #5951 | Hornby Hobbies Ltd | Z |
| #5952 | Hornby Software | Z |
| #5953 | HorrorSoft | Z |
| #22357 | Horst Brand | + |
| #5954 | Horst Delkus | ? |
| #5955 | Horst Franke | ? |