Native Client does not solve the portability issue. Portable Native Client is a research project trying to do that, but it is unclear whether it will succeed, a

Native Client does not solve the portability issue. Portable Native Client is a research project trying to do that, but it is unclear whether it will succeed, and if it does, with what compromises (speed, security, etc.) Native Client can in theory be adopted by other browsers, since it is open source, however no other browser has shown interest, the opposite in fact. Native Client is a nonstandard technology that will remain only in Chrome.