Iconion

Iconion comes in handy to graphic designers who wish to easily generate quality icons for their Mac OS X or iOS apps.

This utility provides you with a comprehensive collection of icon samples which you can customize according to your needs and export to your local directories.

You can choose from a wide variety of icons created by professional graphic designers. Then, the application enables you to add any style you like that's suitable for the program you developed. For instance, you have access to icon styles perfect for iOS apps.

I like the fact that you can customize the appearance of your icon by changing background color, rotate the image within the icon at any angle you like, add shadows, adjust the opacity level, and much more. The program also keeps track of your recent icon creation projects in case you wish to reuse or edit them later.

Once you finish altering your icon project you can select the preferred resolution and output format. An advantage is that you can generate icon files for multiple resolutions at the same time.

All in all, Iconion is one of the best icon generators I tested so far. The application provides you with many useful features, lets you export the icons to various formats, and offers you quality results.