It surely seems like Google is working really hard to switch your desktop applications online. With its ambitious projects like Google chrome OS and continuously developing other projects, it sure aims to next generation of computing i.e cloud computing.
Recently at Google IO it has released chrome web app store much like that of Apple but the difference is that you don't have to download it to any cellphone or computer, it will work online only.
Here is how you can install some web app in your chrome browser.