Source: AppMenuItem

This object hosts the applications you find in the app menù (upper right corner of the CRM) or in the App Launcher and the Connected Apps.
The list of such items are in Setup > Create > Apps

The object contains all application informations such as Name, Label, start URL, but also all the configurations about Canvas apps.

Here an example:

Select Id, Label, StartUrl, Type, ApplicationId, CanvasEnabled, SortOrder from AppMenuItem