| Type | Title | Year | Publisher |
|---|---|---|---|
| Sinclair ZX-81 cass. | 🟩 Critical Path Analysis | 1981 | Hilderbay |
| Sinclair ZX Spectrum cass. | 🟩 Hilderbay Printer Program | 1983 | Hilderbay |
| Sinclair ZX Spectrum cass. | 🟩 Payroll | 1983 | Hilderbay |
| Sinclair ZX Spectrum cass. | 🟩 Simple Word Processor | 1983 | Hilderbay |
| Sinclair ZX Spectrum cass. | 🟩 Statutory Sick Pay | 1983 | Hilderbay |
| Sinclair ZX Spectrum cass. | 🟩 Stock Control | 198? | Hilderbay |