| 40337 | Error Trap | ZX-Spectrum 48K | English |
| 39915 | Error Trap | ZX-Spectrum 48K | English |
| 40394 | Error Trapping | ZX-Spectrum 48K | English |
| 39895 | Escape | ZX-Spectrum 48K | English |
| 19020 | Estructuras Metalicas: Calculo de Cimientos | ZX-Spectrum 48K | Spanish |
| 19019 | Estructuras Metalicas: Calculo de Perfiles en Pilares | ZX-Spectrum 48K | Spanish |
| 19018 | Estructuras Metalicas: Calculo de Perfiles en Vigas | ZX-Spectrum 48K | Spanish |
| 15008 | Estructuras Metalicas: Memoria de Calculo y Cargas | ZX-Spectrum 48K | Spanish |
| 19016 | Estructuras de Hormigon: Calculo de Armaduras de Pilares | ZX-Spectrum 48K | Spanish |
| 19015 | Estructuras de Hormigon: Calculo de Armaduras de Vigas | ZX-Spectrum 48K | Spanish |
| 19017 | Estructuras de Hormigon: Calculo de Cimientos | ZX-Spectrum 48K | Spanish |
| 19014 | Estructuras de Hormigon: Calculo de Esfuerzos en Porticos | ZX-Spectrum 48K | Spanish |
| 15007 | Estructuras de Hormigon: Memoria de Calculo y Cargas | ZX-Spectrum 48K | Spanish |
| 39636 | Etch | ZX81 16K | English |
| 41115 | Etchasketch | ZX80 | English |
| 38484 | Etiquetagem de Cassetes | ZX-Spectrum 48K | Portuguese |
| 17007 | Evopunt | ZX-Spectrum 48K | Spanish |
| 40699 | Exam Marks | ZX81 16K | English |
| 40664 | Examining Prime Numbers | ZX80 | English |
| 39904 | Extended Basic for Interface 1 | ZX-Spectrum 48K | English |