Sprite Master Web is an sprite sheet generator tool for Mac users. It helps you to generate sprite sheet images and write CSS files automatically. Speeds-up your site with single image request.
It has advanced algorithms to order your sprites and generate smallest sprite sheet. Also, you can trim your sprite images or add padding.
Sprite Master Web is a must-have tool for every web developer. Take a look at the web site for more information. You can go to iTunes page here.