Canonical founder Mark Shuttleworth revealed Ubuntu Web Apps, which will be available as a preview for Ubuntu 12.04 LTS soon and will be available by default in October's Ubuntu 12.10 (codenamed Quantal Quetzal) release.
Ubuntu Web Apps, a new feature will enable users to run online applications like Facebook, Twitter, Last.FM, Ebay and GMail direct from the desktop rather than always having them confined to the browser.
It’s easy to integrate your favourite website or interface natively into the desktop, and share the result with all Ubuntu users. No other OS has come close to this level of integration between the web and desktop.
Source:- Canonical Blog