| 22389 | Satspot | ZX-Spectrum 48K | English |
| 29264 | Savings Plan | ZX81 2K | English |
| 8658 | Schnitte im Dreidimensionalen Raum | ZX-Spectrum 48K | German |
| 18118 | Simplifica | ZX-Spectrum 48K | Spanish |
| 19747 | Simulsolve | ZX-Spectrum 48K | English |
| 18682 | Simultaneous Equations | ZX-Spectrum 16K | English |
| 28646 | Simultaneous Equations | ZX81 2K | English |
| 16453 | Sistemas de Ecuaciones | ZX-Spectrum 48K | Spanish |
| 28564 | Sistemas de Numeración | ZX81 16K | Spanish |
| 23565 | Sistemas de Rouche-Frobenius | ZX-Spectrum 48K | Spanish |
| 22436 | Solvex | ZX-Spectrum 48K | English |
| 22131 | Spectrum Fivebyte Representation | ZX-Spectrum 48K | English |
| 20536 | Spectrum Mathematical Applications | ZX-Spectrum 48K | English |
| 29649 | Square Root Solver | ZX81 1K | English |
| 29652 | Standard Deviation | ZX81 1K | English |
| 8793 | Statistics | ZX-Spectrum 48K | English |
| 19810 | Statistics | ZX-Spectrum 48K | English |
| 20563 | Statistics | ZX-Spectrum 48K | English |
| 16807 | Statistics Made Simple | ZX-Spectrum 16K | English |
| 20566 | Statistics Package | ZX-Spectrum 48K | English |