| Title | Environment | Company | Released | Description |
|---|---|---|---|---|
| SampleX | Z80, Sinclair BASIC (+3) | Public domain | 1990 | Sound sampling and replay software |
| EasyList | Sinclair BASIC | Public domain | 1987 ? | LIST command replacement with syntax highlighting |
| DiskDiags | Z80, Sinclair BASIC (+3) | Public domain | 1988 ? | Disk and drive diagnostic software |
| Oxygene demo | Z80, Sinclair BASIC | Public domain | 1990 | Sound sample demo of Jarre's Oxygene IV (using Samplex) |
| BallDemo | Z80, Sinclair BASIC | Public domain | 1989 ? | High-speed spinning checkered ball |
| MultiFile+3 | Z80, Sinclair BASIC (+3) | Public domain | 1989 ? | Disk and file management software for the +3 |
| AutoSlide+3 | Z80, Sinclair BASIC (+3) | Public domain | 1989 ? | Make any +3 disk automatically slideshow SCREEN$ |
| Double 2 | Sinclair BASIC | Public domain | 1988 ? | Double-height text routine (improvements) |
| TV Test 2 | Sinclair BASIC | Public domain | 1988 ? | TV and monitor testing (improvements) |
| CharSet | Spectrum fonts | Public domain | 1987-1990 | Set of 24 standard format fonts |
| MiniShow | Spectrum SCREEN$ | Public domain | 1989 ? | Slideshow of digitised coloured SCREEN$ (using Rombo-ZX) |
| The Breakfast Club Demo | Z80, Sinclair BASIC (+3) | Unreleased | 1990 ? | Demo of digitised images and sound from The Breakfast Club |
| Big Bad Demo | Z80, Sinclair BASIC (+3) | Unreleased | 1990 ? | Demo with sound samples from various mixes and tracks |
| Advanced Toothpaste Sim | Sinclair BASIC | Unreleased | 1987 ? | Very silly game originally intended for Your Sinclair crap game compo |
| Cat256 | Z80 | Unreleased | 1988 ? | Replacement disk catalog tool for large disks |
| SPIN Disk Manager | Windows | Freeware | 2003-2004 | Explore, create and modify 3" disk images (.DSK) |
| 99 Bottles of Beer | Z80 | Public domain | 2004 | Z80 assembler contribution for 99 Bottles of Beer site |
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