| 13718 | Sinclair User issue 98: Megatape 26 | ZX-Spectrum 48K | English |
| 13719 | Sinclair User issue 99: Megatape 27 | ZX-Spectrum 48K | English |
| 19046 | Sinclair ZX Spectrum Test ROM | ZX-Spectrum 16K | English |
| 2001411 | Sinclair ZX81 ROM Disassembly Part A: 0000H-0F54H | - | English |
| 2001412 | Sinclair ZX81 ROM Disassembly Part B: 0F55H-1DFFH | - | English |
| 2000325 | Sinclair and the 'Sunrise' Technology | - | English |
| 2000337 | Sinclair's QL Microcomputer | Sinclair QL | English |
| 39080 | Sinewave 2 | ZX-Spectrum 48K/128K | English |
| 39081 | Sinewave 3 | ZX-Spectrum 48K/128K | English |
| 22783 | Sing Along a Speccy | ZX-Spectrum 48K | English |
| 35511 | Single Copy | ZX-Spectrum 48K | English |
| 44759 | Single Dragon | ZX-Spectrum 128K | English |
| 22088 | Singlestep | ZX-Spectrum 48K | English |
| 24460 | Singlestep | ZX-Spectrum 48K | English |
| 26963 | Singlestep | ZX-Spectrum 48K | English |
| 30543 | Sink The Belgrano | ZX-Spectrum 48K | English |
| 16097 | Sink the Bismarck | ZX-Spectrum 16K | English |
| 36757 | Sink the Subs | ZX-Spectrum 48K | English |
| 32413 | Sins Against Mimesis - An Interactive Theosophy (ZxZvm) | ZX-Spectrum 128 +3 | English |
| 32055 | Sinus | ZX81 16K | English |