Here is a iPhone Icon Pack, which will help each iPhone and iPad application developer get his GUI in order. The icons from this set can be used in navigation, tab bars and toolbars of iOS applications.
Downloads: 20784 - Shareware - Download Now
Design professional looking ribbon-based interfaces with Ribbon Bar Icon Set! This huge collection includes 758 unique royalty-free images in countless variations to accommodate the many sizes, color resolutions and activities of the ribbon bar.
Downloads: 20151 - Shareware - Download Now
This icon set contains 300 icons that represent different sports and activities. The sport are pictured in Vista/Seven style, making your applications appear great. These icons are suitable for specialized software and web applications.
Downloads: 21278 - Demo - Download Now
12x12 Free Toolbar Icons pack contains everything you need for your web site or application toolbar
Downloads: 20888 - Freeware - Download Now
Here is a TabBar Icons For Mobile Apps, which will help each iPhone or iPad application developer get his GUI in order. They are licensed under a Creative Commons Attribution-Share Alike license. You may use the icons for web design also.
Downloads: 20522 - Shareware - Download Now