| ID | Title | Machine | Language |
|---|---|---|---|
| 40803 | Surge | ZX81 16K | English |
| 38441 | Surround | ZX81 16K | English |
| 41059 | Surrounded | ZX81 16K | English |
| 41484 | Survivor Graphics Loader | ZX81 16K | English |
| 41203 | Swag | ZX81 16K | English |
| 41114 | Swappo | ZX81 16K | English |
| 41321 | Swimming Gala | ZX81 16K | English |
| 43511 | Swurlpool | ZX81 16K | English |
| 37555 | Symmetry | ZX81 16K | English |
| 36787 | T-KALC | ZX81 16K | Portuguese |
| 34580 | T.W.M. | ZX81 16K | English |
| 29369 | TEKENEN | ZX81 16K | - |
| 29382 | THT SIM | ZX81 16K | Dutch |
| 43479 | TKADREZ I | ZX81 16K | Portuguese |
| 43480 | TKADREZ II | ZX81 16K | Portuguese |
| 34712 | TODOS | ZX81 16K | English |
| 29389 | TOOLKIT4 | ZX81 16K | - |
| 29391 | TOOLKIT6 | ZX81 16K | - |
| 41769 | TRACE | ZX81 16K | Portuguese |
| 35723 | TS | ZX81 16K | English |