| Sinclair ZX Spectrum cass. |  SL3 Advanced Super Speedloader | 1986 | Kobrahsoft |
| Sinclair ZX Spectrum cass. | SO4 Tape To Opus Utility | 1987 | Kobrahsoft |
| Sinclair ZX Spectrum cass. | SP3 Tape To +3 Disc Utility | 1987 | Kobrahsoft |
| Sinclair ZX Spectrum cass. | SD4+ Tape To Microdrive Utility | 1988 | Kobrahsoft |
| Sinclair ZX Spectrum cass. | SW1 Tape To Wafa Drive Utility | 1988 | Kobrahsoft |
| Sinclair ZX Spectrum cass. | SM1 Multiface Suite | 1990 | Kobrahsoft |
| Sinclair ZX Spectrum cass. | Konix Liberator | 1986 | Konix Computer Products |
| Sinclair ZX Spectrum cass. | Kopy Kat | 198? | Kopy-Kat Soft. |
| Sinclair ZX Spectrum cass. | Map of the UK | 1983 | Kuma Computers, Ltd. England |
| Sinclair ZX Spectrum cass. | Logo | 1984 | Kuma Computers, Ltd. England |
| Sinclair ZX Spectrum cass. | Photo Finish | 1984 | LJK |
| Sinclair ZX Spectrum cass. | Lerm Graphics and Sound Toolkit | 1984 | Lerm Soft. |
| Sinclair ZX Spectrum cass. | Lerm Advanced Header Reader | 1985 | Lerm Soft. |
| Sinclair ZX Spectrum cass. | MicroDrive 1 | 1985 | Lerm Soft. |
| Sinclair ZX Spectrum cass. | Minitape 6 | 1985 | Lerm Soft. |
| Sinclair ZX Spectrum cass. | Code Compressor 1 | 1986 | Lerm Soft. |
| Sinclair ZX Spectrum cass. | Microtrans | 1986 | Lerm Soft. |
| Sinclair ZX Spectrum cass. | Lerm Micromate | 1988 | Lerm Soft. |
| Sinclair ZX Spectrum cass. | Z80 Toolkit | 1988 | Lerm Soft. |
| Sinclair ZX Spectrum cass. | Lerm Tape Copier Ver.4 | 198? | Lerm Soft. |
| Sinclair ZX Spectrum cass. | Lerm Tape Copier Ver.5 | 198? | Lerm Soft. |
| Sinclair ZX Spectrum cass. | Lerm Tape Copier Ver.6 | 198? | Lerm Soft. |
| Sinclair ZX Spectrum cass. | Lerm Tape Copier Ver.7 | 198? | Lerm Soft. |
| Sinclair ZX Spectrum cass. | Lerm Tape Utility A | 198? | Lerm Soft. |
| Sinclair ZX Spectrum cass. | Lerm Tape Utility B | 198? | Lerm Soft. |
| Sinclair ZX Spectrum cass. | Lerm Tape Utility C | 198? | Lerm Soft. |
| Sinclair ZX Spectrum cass. | Lerm Tape Utility D | 198? | Lerm Soft. |
| Sinclair ZX Spectrum cass. | Lerm Tape Utility Ver.8 | 198? | Lerm Soft. |
| Sinclair ZX Spectrum cass. | Lerm Tape Utility Ver.9 | 198? | Lerm Soft. |
| Sinclair ZX Spectrum cass. | Biology | 1985 | Letts & Co., Charles |
| Sinclair ZX Spectrum cass. | Computer Studies | 1985 | Letts & Co., Charles |
| Sinclair ZX Spectrum cass. | Mathematics | 1985 | Letts & Co., Charles |
| Sinclair ZX Spectrum cass. | Physics | 1985 | Letts & Co., Charles |
| Sinclair ZX Spectrum cass. | Chemistry | 19?? | Letts & Co., Charles |
| Sinclair ZX Spectrum cass. | Microweight | 1983 | Little Softie |
| Sinclair ZX Spectrum cass. | Graphic Creator | 1982 | Llamasoft |
| Sinclair ZX Spectrum cass. | Selectron 36 | 1985 | Lodge, P.S. |
| Sinclair ZX Spectrum cass. | Learn BASIC Programming on the Sinclair ZX Spectrum | 1984 | Logic 3 |
| Sinclair ZX Spectrum cass. | Mathematics - O-Level Revision And CSE | 1984 | Longman Soft. |
| Sinclair ZX Spectrum cass. | Computer Studies | 198? | Longman Soft. |
