
Description: GDM (GNOME Display Manager) is a display manager, used in GNOME desktop environments to start the graphical session and allow users to log in. It provides a graphical login screen and launches the user's chosen desktop environment after authentication.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: LightDM is a lightweight display manager and greeter for Linux and other Unix-based operating systems. It aims to be fast, extensible and standards-compliant.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API