Official Twitter App is available on Windows Store
|Finally Twitter released Official Window 8 and Windows RT App on Windows Store http://blogs.windows.com/windows/b/windowsexperience/archive/2013/03/13/twitter-for-windows-8-now-available-in-the-windows-store.aspx?utm_source=twitterfeed&utm_medium=twitter. Download from Windows Store here http://apps.microsoft.com/windows/en-US/app/twitter/8289549f-9bae-4d44-9a5c-63d9c3a79f35