Guitar Rig is a software application developed by Native Instruments that simulates a wide range of guitar amplifiers, effects, and recording tools. It allows musicians to create and customize their own guitar sounds using virtual equipment, making it a popular choice for both studio recordings and live performances. The software features a user-friendly interface where users can drag and drop different components to build their desired sound. With a variety of presets and the ability to tweak settings, Guitar Rig caters to guitarists of all skill levels, providing endless possibilities for sound exploration.