(Keep in mind I do not own a PowerSaves, though I may buy one at some point. Has anyone developed any such software? Are there any plans to? Considering reverse-engineering and game hacking is basically Datel's business, how likely do you think they would be to cooperate with the community for this purpose by providing technical documentation? (Not that I think it would be impossible without it, but it would certainly help.) Knowing Datel and what they do, they probably only removed the codes to cover their asses, rather than any real desire to protect Nintendo's brand interests. While I've seen workarounds involving Cheat Engine, I think a better option would be to reverse-engineer the software and develop our own, preferably that lets you edit the raw save data with tools like Pokegen, in the case of the Pokemon games. The default application will try to establish MQTT connection with and publishes message to a topic every 30 sec.

Apparently due to legal pressure from Nintendo, Datel was forced to remove the codes for Diancie, Hoopa, and Volcanion, as well as the items, in Pokemon X/Y, from PowerSaves in an update.

Powersaves download client