| 41339 | Cake Bake | ZX81 16K | English |
| 21986 | Cal-Plan | ZX-Spectrum 48K | English |
| 19864 | CalCount | ZX-Spectrum 48K | English |
| 19865 | CalFiFat | ZX-Spectrum 48K | English |
| 22054 | Calcomathic | ZX-Spectrum 48K | English |
| 42269 | Calculad0ra "Screens & Fonts" | ZX-Spectrum 48K | English |
| 22494 | Calcular | ZX-Spectrum 48K | English |
| 25712 | Calculating VAT | ZX-Spectrum 16K | English |
| 2000904 | Calculating with QL Abacus | Sinclair QL | English |
| 25713 | Calculator | ZX-Spectrum 48K | English |
| 39969 | Calculator | ZX81 16K | English |
| 40730 | Calculator | ZX81 16K | English |
| 19518 | Calculator | ZX-Spectrum 48K | English |
| 28736 | Calculator | ZX81 2K | English |
| 22884 | Calculator Compendium | ZX-Spectrum 48K | English |
| 31921 | Calculus Mazximus | ZX81 1K | English |
| 32005 | Calendar | ZX81 16K | English |
| 29490 | Calendar | ZX81 1K | English |
| 25714 | Calendar | ZX-Spectrum 48K | English |
| 22528 | Calendar | ZX-Spectrum 48K | English |