Yes, but it's also a good thing that open source software is becoming mainstream. If companies are able to present someone else's open source work as their own,

Yes, but it's also a good thing that open source software is becoming mainstream. If companies are able to present someone else's open source work as their own, without even giving any credit, it destroys a huge part of the incentive for writing open source software in the first place (recognition). I wasn't saying that the author should try to get the content taken down. I was just saying that he deserves either: (1) a clarification from Google saying that they liked the interface and did an interface-based rewrite without consulting the his source code -or- (2) a release of the modified source code (as the GPL requires) I'm not trying to stop photo VR from becoming mainstream. Since when does open-sourcing something prevent it from becoming mainstream?