| 2000103 | Das ZX81 ROM | - | German |
| 2000784 | Data Becker's Homecomputer Buch | - | German |
| 2000607 | Data Communicatie | - | Dutch |
| 2000105 | Data Management at Work | - | English |
| 2000106 | Database Management on the Sinclair QL | Sinclair QL | English |
| 2000546 | Datenverarbeitung mit dem Sinclair QL | Sinclair QL | German |
| 2001257 | Delta Manual | - | Czech |
| 2000859 | Der Einstieg in die EDV met dem ZX 81 | - | German |
| 2000591 | Der Mikrocomputer ZX81 im Einsatz | - | German |
| 2000770 | Der Sinclair QL unter Kontrolle | Sinclair QL | German |
| 2000111 | Desk-Top Computing with the Sinclair QL | Sinclair QL | English |
| 2000671 | Developing Applications on the Sinclair QL | Sinclair QL | English |
| 2001699 | Diary Of An 80s Computer Geek: A Decade of Micro Computers, Video Games and Cassette Tape | - | English |
| 2000820 | Dicionário do BASIC Sinclair para os micros TK82C, NE Z8000, TK83, TK85, CP 200, RINGO, AS 1000, etc... | - | Portuguese |
| 2000919 | Die Besten Anwendungen fur Home-Computer | - | German |
| 2000609 | Die Intelligente Maschine | - | German |
| 2000469 | Disc Drives for Microcomputers | - | English |
| 2001087 | Discover FORTH: Learning and Programming the FORTH Language | - | English |
| 2001281 | Discover Your ZX Spectrum | - | English |
| 2000634 | Dizzy: This Is Your Life | - | English |