Read MoreThe utility bar provides your users quick access to common productivity tools, like Recent Items and Notes. It appears as a fixed footer that users can access to open utilities in docked panels. Under the covers, utilities harness the power of Lightning components. You can add a utility bar to any Lightning app, including standard and console apps. Before, you could only add or customize a utility bar using the API. This feature is new in Lightning Experience.
Utility bar may sound familiar as it combines the best features from home page components in Salesforce Classic and the footer in Salesforce Classic console apps.