Check this out.
The Google Native Client is a new set of components that allows Web browsers to download and execute native x86 code. It’s not an emulator, and it’s not a virtual machine. The code runs on the actual processor with access to memory and system resources and negligible loss of performance. It even gives browser-based apps access to modern, accelerated CPU instruction sets, such as SSE.
Move over Microsoft.
http://weblog.infoworld.com/fatalexception/archives/2008/12/native_client_g.html
http://code.google.com/p/nativeclient/
