Quoting from Flexbeta:
PearPC developers are taking in donations to sue Maui X-Stream, the developers of the MAC emulator software CherryOS. There have been allegations that CherryOS is nothing more than PearPC code, which is open-source, but with a GUI attached to it. According to this post, one of the PearPC developers tried to get in contact with someone from Maui X-Stream, but eventually where told to “speak with an Attorney” about the allegations. So that’s what PearPC is doing.