This is an interesting Google experiment. It's open-source research technology for running x86 native code in web applications, with the goal of maintaining the browser neutrality, OS portability, and safety that is expected from web apps. I can see how getting this working well would help Google with their Chrome Operating system. . It's all very well running web apps but there are some applications that need to be run locally. This is one step in that direction by letting you run them locally but within the web browser.
It's multi-platform (Windows, Linux and Mac) and currently needs Python to run the installation though they are working on removing that. There is a suite of tests that includes Quake (Yes that Quake!) which you have to compile/build yourself. There's a 47 minute long video on the project page talking about the project and showing some of the demos.I've put a permanent link on the useful online resources links page below.
- Link to Useful Online resources