| 40646 | Square Root | ZX80 | English |
| 39715 | Squares, Triangles, Circles | ZX-Spectrum 48K | English |
| 41636 | Stacks and Queues | ZX81 16K | English |
| 41067 | Standard Deviations | ZX81 16K | English |
| 40302 | Star | ZX-Spectrum 48K | English |
| 35604 | Star Map | ZX81 16K | English |
| 45504 | Starburst | ZX81 1K | English |
| 39923 | Statistical Program | ZX81 16K | English |
| 40332 | Statistics | ZX-Spectrum 48K | English |
| 40720 | Storage Technique | ZX81 16K | English |
| 40429 | Store/Recall Screen | ZX-Spectrum 48K | English |
| 40091 | Storing Data Above RAMTOP | ZX81 16K | English |
| 39890 | String Edit Utility | ZX-Spectrum 48K | English |
| 40648 | String Functions | ZX80 | English |
| 44250 | String Machine | ZX-Spectrum 48K | English |
| 41501 | String Sort | ZX81 16K | English |
| 35574 | String Sort | ZX81 16K | English |
| 40847 | Strobe | ZX81 16K | English |
| 40276 | Sunburst | Sinclair QL | English |
| 39940 | Super Sketchpad | ZX81 16K | English |