GLeS is an OpenGL ES Emulator developed by Arm, designed to assist developers in creating and testing graphics applications intended for mobile and embedded devices that support OpenGL ES. This emulator allows developers to run and debug their OpenGL ES applications on a desktop environment, providing a flexible and convenient platform for development without the need for the actual hardware. The tool is available for download on Arm's official website, specifically under the Graphics Development Tools section, and it supports various versions of OpenGL ES to facilitate a wide range of testing scenarios.