* [[C4CPC|C4CPC]] a modern cartridge replacement for the Amstrad Plus range and the GX4000.
* [https://overange.weebly.com/amstrad-gx4000-cpc-464-6128-plus-reflashable-flash-cartridge.html Flash+ cartridge] Amstrad CPC+ GX4000 reflashable cartridge.
* [[Plus2CPC|Plus2CPC]] an expansion board to add a Plus cartridge port to the standard CPC.
* [https://www.cpcwiki.eu/forum/amstrad-cpc-hardware/play2cpc-plus2cpc-ii-extra-sound-channels-and-rewritable-cartridges/ Play2CPC] (aka Plus2CPC II) cartridges are now rewriteable and is now partially compatible with the PlayCity expansion (YMZ chip).