* [[Albireo]] ([[PulkoTronics]] / DIY)
* [[CPC Booster|CPC Booster/CPC Booster+]]
* [[CPCISA by Yarek]] ([[YarekSiou]])
* [[CPCMax!]]
* [[CPCX]]
* Amstrad Expansion System Part 2 ([[Maplin]]) - appeared in Project book 19 (for Part 1 see [[Maplin ROM Box]])
* [[Amstrad CT-1 Radio/Alarm-Clock]] ([[Amstrad]])
* [[CPCISA by Yarek|CPCISA]] ([[YarekSiou]])
* [[Data Media Printerinterface]] (printer splitter for connecting 2 or 3 software-selectable printers to the CPC) ([[Data Media]])
* [[DCP Interpacks]] (DCP Microdevelopments)