Chatter is a collaborative product by Salesforce. It helps you to collaborate with users within an organization. Chatter allows users to be updated with the information that is important to them. Users get status updates from other user's profiles and real-time feed updates. Salesforce Chatter is just like Twitter or Facebook where you can share the progress of your work with your colleagues, get updates from the data that matters to you, or create groups to share some information with a specific set of users or groups.