With this utility you can use any Texture Packer sprite sheet for your GUI System.
* easy to install
* easy to load / unload atlases
* easy to draw and manage textures
* supporting rotation, trim, crop
* can be used with any GUI system for Unity
This utility will not do GUI work for you, it will just get write texture from atlas, and draw it for you. Then you can do what ever you want with your Game GUI system.