| 8820 | Synsounds | ZX-Spectrum 48K | German |
| 5105 | Syntax | ZX-Spectrum 48K | English |
| 26377 | Synth | ZX-Spectrum 48K | Italian |
| 19273 | Synth 1 | ZX-Spectrum 48K | English |
| 8821 | Synthensyser | ZX-Spectrum 48K | English |
| 8822 | Synti | ZX-Spectrum 48K | Slovenian |
| 19541 | Syntrax | ZX-Spectrum 48K | English |
| 38403 | Syntéza řeči | ZX-Spectrum 48K | Czech |
| 43133 | Syrečky III - Záchrana kapesného | ZX-Spectrum 48K | Czech |
| 10290 | Syrinx 2 | ZX-Spectrum 48K | English |
| 19798 | Sys | ZX-Spectrum 48K | English |
| 5106 | System 15000 | ZX-Spectrum 48K | English |
| 10675 | System 15000 - 2nd Edition | ZX-Spectrum 48K | English |
| 12155 | System 3 Pack | ZX-Spectrum 48K | English |
| 10676 | System 8 | ZX-Spectrum 48K | English |
| 21534 | System AMA.01 | ZX-Spectrum 48K | Polish |
| 21535 | System AMA.02 | ZX-Spectrum 48K | Polish |
| 21450 | System Test | ZX-Spectrum 48K | Russian |
| 8825 | System-File | ZX-Spectrum 48K | German |
| 39391 | Systems Editoriale Compilation | ZX-Spectrum 48K | Multi-language: English, Italian |