| 11647 | Decimals | ZX-Spectrum 48K | English |
| 37513 | Declinacion Latina | ZX-Spectrum 16K/48K | Spanish |
| 40595 | Demonstration of Logical Operators | ZX81 16K | English |
| 40596 | Demonstration of Shift/Rotate | ZX81 16K | English |
| 19545 | Depth Charge | ZX-Spectrum 48K | English |
| 16603 | Derivadas | ZX-Spectrum 48K | Spanish |
| 16595 | Desarrollos de Taylor | ZX-Spectrum 48K | Spanish |
| 16189 | Descolocas | ZX-Spectrum 48K | Spanish |
| 16601 | Despejar | ZX-Spectrum 48K | Spanish |
| 38023 | Despejar | ZX-Spectrum 48K | Spanish |
| 27199 | Deutsch | ZX-Spectrum 48K | Russian |
| 39333 | Devin | ZX81 16K | French |
| 43811 | Dexam | ZX-Spectrum 16K/48K | English |
| 11652 | Diabetes | ZX-Spectrum 48K | English |
| 38040 | Diagramm | ZX-Spectrum 48K | German |
| 17796 | Dice | ZX-Spectrum 48K | English |
| 38133 | Didactica de la Aritmetica | ZX-Spectrum 48K | Spanish |
| 23509 | Didacticiales | ZX-Spectrum 48K | Spanish |
| 18331 | Didactico | ZX-Spectrum 48K | Spanish |
| 38343 | Didaktik Gama - Úvodná kazeta | ZX-Spectrum 48K | Slovak |