With the release of Google+ social network, Google also rolled out a new notification bar across all Google web services, which lets you access Google+ and also other services. The Google notification bar will be available only for Google services, but with the Chrome extension Everything, you get the Google notification bar on all pages once you have installed it.
The notification bar remains for all websites when you open on Google Chrome and the extension allows you to quickly view your new notification for Google+ and also access other Google services like Gmail, Calendar, Documents, YouTube etc.
The extension will automatically access your Google+ data and find out if you have any new updates. The extension needs you to log into Google+ from Chrome.