| Dice Roller | Implementing polyhedral die roller routines in C with Z88dk. | Sinclair ZX81 |
| Hidden Cave - A Fighting Fantasy Game | Implementation of a short dungeon crawl adventure that uses the Fighting Fantasy combat system. | Sinclair ZX81, Type-in program |
| MicroAce | History of the MicroAce, a Sinclair ZX80 clone that could be upgrade to be a ZX81 clone. | MicroAce |
| My Start with the ZX81 | How Tim Swenson came to own a Sinclair ZX81 and, for a short while, was a software publisher. | Sinclair ZX81 |
| Using HRG-ms | Overview of a high-resolution toolkit for the ZX81 by Matthias Swatosch. | Sinclair ZX81 |
| VuCalc | Overview of Vu-Calc, a spreadsheet for the ZX81/TS1000. | Sinclair ZX81 |
