| 36829 | SQ-Linker | ZX-Spectrum 48K/128K | English |
| 21734 | STrange Player | ZX-Spectrum 48K | English |
| 34961 | Sam MIDI Sequencer | SAM Coupé | English |
| 24301 | SamSynth | ZX-Spectrum 48K | English |
| 8648 | Sample Convertor | ZX-Spectrum 48K | English |
| 12467 | Sample Editor | ZX-Spectrum 48K | English |
| 22530 | Sheet 2 | ZX-Spectrum 48K | English |
| 21731 | Silicon Player | ZX-Spectrum 48K | English |
| 17005 | Sintetizador Musical | ZX-Spectrum 48K | Spanish |
| 38536 | Sintetizador de Som | ZX-Spectrum 48K | Portuguese |
| 8680 | Sintetizador de Voz | ZX-Spectrum 48K | Spanish |
| 17907 | Sintetizador de Voz para TK90X e Compativeis | ZX-Spectrum 48K | Portuguese |
| 8681 | Sinti | ZX-Spectrum 16K | Serbian |
| 33350 | SoftPLAY | ZX-Spectrum 128K | - |
| 33353 | SoftPLAY - esxDOS/UnoDOS Edition | ZX-Spectrum 128K | - |
| 21049 | Sonido Alfa | ZX-Spectrum 48K | Spanish |
| 12087 | Sound Database | ZX-Spectrum 48K | English |
| 11123 | Sound Designer | ZX-Spectrum 16K | English |
| 24461 | Sound Editor | ZX-Spectrum 48K | English |
| 42427 | Sound Mixer 2 | ZX-Spectrum 48K | English |