* [[MegaFlash|MegaFlash]] (Bryce)
* [[Multi_Cartridge|Multi-Cartridge]] (Bryce)
* [[Old School 512K RAM Expansion]] (Revaldinho) - 512K RAM expansion built with an SRAM and 74 Series standard logic
* [[Amstrad ROM Expander|Practical Electronics ROMBoard Project]] (Simon Dean)
* [[Ramcard 128]] ([[RAM7]])