Chrome: Try Web Store Apps Without Installing Them
 

Google is working on a way for you to give Web Apps a test drive without actually having to install them first if a new Chromium feature finally works itself into the mainstream via Google Chrome. There's clearly still a lot of work to be done before we see this feature show up in Chrome, but given that the company is already making changes to the Chrome Web Store, it's clear this is another one of those "when" instead of "if" questions.

http://www.hardocp.com/news/2013/11/...stalling_them/