| 27634 | Calc | ZX-Spectrum 48K | Spanish |
| 22054 | Calcomathic | ZX-Spectrum 48K | English |
| 18561 | Calculador | ZX-Spectrum 48K | Spanish |
| 18636 | Calculador | ZX-Spectrum 48K | Spanish |
| 16294 | Calculadora | ZX-Spectrum 48K | Spanish |
| 23437 | Calculadora Cientifica Residente | ZX-Spectrum 48K | Spanish |
| 16537 | Calculadora por Interrupciones | ZX-Spectrum 48K | Spanish |
| 22494 | Calcular | ZX-Spectrum 48K | English |
| 28736 | Calculator | ZX81 2K | English |
| 25713 | Calculator | ZX-Spectrum 48K | English |
| 17055 | Calculator | ZX-Spectrum 16K | Spanish |
| 19518 | Calculator | ZX-Spectrum 48K | English |
| 22884 | Calculator Compendium | ZX-Spectrum 48K | English |
| 24625 | Calculo | ZX-Spectrum 48K | Spanish |
| 19417 | Calculo de Determinantes | ZX-Spectrum 48K | Spanish |
| 18096 | Calculo de Errores | ZX-Spectrum 48K | Spanish |
| 23548 | Calculo de Inversiones y Rentabilidad | ZX-Spectrum 48K | Spanish |
| 14395 | Calculo de Porticos | ZX-Spectrum 48K | Spanish |
| 14396 | Calculo de Vigas | ZX-Spectrum 48K | Spanish |
| 42120 | Cambio de Base | ZX-Spectrum 16K | Spanish |