| 44106 | Ohm's Law | ZX-Spectrum 16K/48K | English |
| 22200 | Ohm-Calc | ZX-Spectrum 48K | English |
| 17474 | PCB Designer | ZX-Spectrum 48K | English |
| 27219 | PCB-DES | ZX-Spectrum 48K | English |
| 27146 | Plata | ZX-Spectrum 48K | Russian |
| 34642 | Programmator | Pentagon 128 | Russian |
| 28093 | Projektowanie Plytek Drukowanych | ZX-Spectrum 48K | Polish |
| 8599 | Projektowanie Plytek PCB | ZX-Spectrum 48K | Polish |
| 8600 | Proracun Aktivnih Filtera | ZX-Spectrum 48K | Bosnian |
| 8601 | Proracun Antena | ZX-Spectrum 48K | Bosnian |
| 8602 | Proracun Transformatora | ZX-Spectrum 48K | Bosnian |
| 38068 | Puertas Logicas | ZX-Spectrum 48K | Spanish |
| 16653 | R.F. Tuned Circuits | ZX-Spectrum 48K | Dutch |
| 22125 | Rescalc | ZX-Spectrum 48K | English |
| 8630 | Rescode | ZX-Spectrum 48K | English |
| 38027 | Resistencias | ZX-Spectrum 48K | Spanish |
| 23219 | Resistor | ZX-Spectrum 48K | English |
| 16988 | Resistor Colour Coder | ZX-Spectrum 48K | English |
| 27148 | Robin-2 | ZX-Spectrum 48K | Russian |
| 8656 | Schaltplan | ZX-Spectrum 48K | German |