As some of you may be aware, Googles browser ( Chrome ) has had the ability to install "Web apps"

These are essentially Java and Normal websites packaged nicely up in a zip file and installable on the Chrome webbrowser.

Google today announced a few things about their new OS, However they also launched the WebStore.
https://chrome.google.com/webstore

If you have a useful website / useful tool on your website. Why not make an app for your site?

but does those apps can affect the speed of the browser and other application?

Originally Posted by full house

but does those apps can affect the speed of the browser and other application?

They increase accessibility of the browser.

How do you run apps on Google Chrome? Do you mean extensions?