| 20199 | Machine Code Analyser | ZX-Spectrum 48K | English |
| 2000225 | Machine Code Applications for the ZX Spectrum: Expert Machine Code Techniques | - | English |
| 19376 | Machine Code Assembler and Utilities | ZX-Spectrum 48K | English |
| 25829 | Machine Code Calculator | ZX-Spectrum 48K | English |
| 40796 | Machine Code Commands | ZX-Spectrum 48K | English |
| 29566 | Machine Code Converter | ZX81 16K | English |
| 16759 | Machine Code Disassembler | ZX-Spectrum 48K | English |
| 42766 | Machine Code Editor | ZX-Spectrum 16K | English |
| 20326 | Machine Code Editor | ZX-Spectrum 16K | English |
| 19722 | Machine Code Editor | ZX-Spectrum 16K | English |
| 2000226 | Machine Code Extensions for Spectrum BASIC | - | English |
| 40324 | Machine Code Index | ZX-Spectrum 48K | English |
| 41089 | Machine Code LIST | ZX81 16K | English |
| 25830 | Machine Code Loader | ZX-Spectrum 16K | English |
| 39920 | Machine Code Loader | ZX81 16K | English |
| 13315 | Machine Code Loader | ZX-Spectrum 48K | English |
| 40167 | Machine Code Monitor | ZX-Spectrum 48K | English |
| 20327 | Machine Code Monitor | ZX-Spectrum 16K | English |
| 18693 | Machine Code Monitor | ZX-Spectrum 16K | English |
| 41610 | Machine Code Plotter | ZX81 16K | English |