| Sinclair ZX Spectrum cass. |  Hideaway + Panagram | 1990 | Byron Soft. |
| Sinclair ZX Spectrum cass. | Highway Code | 1985 | Datek |
| Sinclair ZX Spectrum cass. | Highway Code | 1984 | Rose Soft. |
| Sinclair ZX Spectrum cass. | Hilderbay Printer Program | 1983 | Hilderbay |
| Sinclair ZX Spectrum cass. | HiSoft Assembler | 1983 | HiSoft |
| Sinclair ZX Spectrum cass. | HiSoft BASIC Compiler | 1986 | HiSoft |
| Sinclair ZX Spectrum cass. | HiSoft C Compiler Ver.1.3 | 1984 | HiSoft |
| Sinclair ZX Spectrum cass. | HiSoft Colt Compiler | 1985 | HiSoft |
| Sinclair ZX Spectrum cass. | HiSoft Debugger | 1983 | HiSoft |
| Sinclair ZX Spectrum cass. | HiSoft Devpac Ver.2 | 1983 | HiSoft |
| Sinclair ZX Spectrum cass. | HiSoft Devpac Ver.3 | 198? | Ventamatic Spain |
| Sinclair ZX Spectrum cass. | HiSoft Devpac Ver.3 | 1983 | HiSoft |
| Sinclair ZX Spectrum cass. | HiSoft Devpac Ver.4 | 1987 | HiSoft |
| Sinclair ZX Spectrum cass. | HiSoft Pascal 4 | 1983 | HiSoft |
| Sinclair ZX Spectrum cass. | HiSoft Ultrakit | 1984 | HiSoft |
| Sinclair ZX Spectrum cass. | Histoire | 1983 | Ere Informatique Paris, France |
| Sinclair ZX Spectrum cass. | History 1 | 1982 | Sinclair Research, Ltd. |
| Sinclair ZX Spectrum cass. | História de Portugal | 1984 | Avlisoft Portugal |
| Sinclair ZX Spectrum cass. | Homac | 1983 | Martin Associates Ltd., David |
| Sinclair ZX Spectrum cass. | Home Accounts Management | 1983 | QED Systems |
| Sinclair ZX Spectrum cass. | Home Budget | 1983 | Flowchart |
| Sinclair ZX Spectrum cass. | Home Builder | 1987 | Coxsoft |
| Sinclair ZX Spectrum cass. | Home Calc | 1983 | Goodwin & Kingswell |
| Sinclair ZX Spectrum cass. | Home Investor | 1983 | Winfield, Rod G. |
| Sinclair ZX Spectrum cass. | Honey Assembler Ver.2.1 | 1985 | Glentop |
| Sinclair ZX Spectrum cass. | Horizons | 1982 | Rebit Computer |
| Sinclair ZX Spectrum cass. | Horizons | 1982 | Micropress |
| Sinclair ZX Spectrum cass. | Horse Analysis | 1984 | McCarthy, Steve |
| Sinclair ZX Spectrum cass. | Horse Race Analyser - 1986 | 1986 | Mayday Soft. |
| Sinclair ZX Spectrum cass. | Horse Racing Analyser - 1984 | 1984 | Mayday Soft. |
| Sinclair ZX Spectrum cass. | Horses - Race Predictions | 1985 | Gamble Soft. |
| Sinclair ZX Spectrum cass. | HS-Compiler | 198? | Aackosoft Netherlands |
| Sinclair ZX Spectrum cass. | Icon Graphix | 1986 | ASL Audiogenic Soft., Ltd. |
| Sinclair ZX Spectrum cass. | Identikit | 1983 | Stell Soft. |
| Sinclair ZX Spectrum cass. | Images | 1985 | SciCAL Soft. |
| Sinclair ZX Spectrum cass. | Infoload | 1989 | Your Sinclair |
| Sinclair ZX Spectrum cass. | Infrared | 1982 | ACS Soft. Alexander Computing Systems |
| Sinclair ZX Spectrum cass. | Instant Recall | 1988 | Supersoft |
| Sinclair ZX Spectrum cass. | Interactive BASIC Programming | 1985 | Eigen |
| Sinclair ZX Spectrum cass. | Interface 3 Printer Interface Tape | 1985 | Evesham Micros |
