This is pretty cool. Ever wanted to find out what your site looks like under Google Chrome, or Opera, or IE6/7/8, or Safari? Well, now you can without installing the applications directly.
The xenocode browser sandbox will allow you to use different browsers. It appears to download a .exe file named for the browser you are running. By the documentation, it appears to be a repackaged binary of the browser that runs in it’s own sandbox. It’s an interresting trick. No real install, but the application still runs localy.