You can open the window through the top menu Tools → Installed Applications
This window displays all installed applications in the system. Starting from version 2.2.5, the system applications (pre-installed) and applications that the user installed in the window are separately displayed. At the top of the window displays the name of the active application.
The name obtained here can be used in the Utils action to start, stop, delete applications, save and restore their data, and for other actions.
The same list can be obtained using ADB Shell, command - pm list packages