
Description: GOverlay is a lightweight customizable overlay app for displaying information like FPS, CPU usage, RAM usage, etc while gaming. It has a clean interface and lots of customization options.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: MangoHUD is an open source graphical overlay for games and applications that provides performance metrics and system information to monitor FPS, temperatures, CPU/GPU load and more in real-time.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API