| 31146 | Complete Useless Machine Simulator | ZX-Spectrum 16K | English |
| 41400 | Complex Maths | ZX81 16K | English |
| 36264 | Complex Maths... WITH DRAGONS! | ZX80 | English |
| 26212 | Complex Oldfield Trilogy | ZX-Spectrum 128K | English |
| 22185 | Compodem | ZX-Spectrum 48K | English |
| 17927 | Component Diagrams | ZX-Spectrum 48K | English |
| 27679 | Composer | ZX-Spectrum 48K | English |
| 8032 | Composer | ZX-Spectrum 48K | English |
| 11604 | Composer | ZX-Spectrum 48K | English |
| 12513 | Composer | ZX-Spectrum 48K | English |
| 44270 | Compositor | ZX-Spectrum 128 +2A/+3 | English |
| 40475 | Compound Interest | ZX81 16K | English |
| 40129 | Compound Interest | ZX-Spectrum 48K | English |
| 25556 | Comprehensive French Verbs | ZX-Spectrum 48K | English |
| 8033 | Compress Copy | ZX-Spectrum 48K | English |
| 42424 | Compress Copy 128K + | ZX-Spectrum 128K | English |
| 40416 | Compressor | ZX-Spectrum 48K | English |
| 12441 | Compuchord | ZX-Spectrum 48K | English |
| 12622 | Compufile | ZX-Spectrum 48K | English |
| 37436 | Compukit UK101 emulator | ZX-Spectrum 48K/128K | English |