Access to Other Salesforce Apps

There are other Salesforce apps that are available to you right from within Salesforce. Other apps include the Salesforce Sales app, the Service app, and any custom apps for your organization.

Any third-party apps that are connected to your Salesforce org are called connected apps. If your org has connected apps, they appear in the App Launcher. Third-party apps are productivity apps such as Gmail™ and Microsoft Office 365™.

• Open Another App from the App Launcher in Salesforce Classic
  Navigate between your Salesforce apps and connected apps from a single menu.
• App Switching in Lightning Experience
  Use the App Launcher to navigate between your apps. You can easily switch between apps and access other Salesforce items and features.