IC Minimal Icon Set includes 28 Icons in total, PNG & JPG format and PSD is also included!

The IsoIcons Workspace Set includes 10 isometric Designer/Freelancer workspace icons. These icons are packed with details, and incredibly well done.

This icon set contains nearly 150 unique icons (all in 3 sizes) optimized for high resolution retina displays (like that of an iPhone). Licensed under a Creative Commons Attribution-Share Alike license.

Thirty-five 32x32px credit card .png icons are included in this free set. Attribution is required if these icons are used, but otherwise they are free.

Each icon is available in 16, 24, 32, 48, and 256px. Includes Windows 7 .ico icon format, and .png transparent images. This icon set is licensed under a Creative Commons Attribution-NoDerivs 3.0 Unported License.

Icon Finder brings us 15 high quality Christmas icons from IconShock, but also takes a look at what makes (or breaks) a really great icon. Not very in depth, but a good read for any growing icon designer.

Icons for over 150 different social sites, including vectors, and PSD's for every icon. Four different color variations, and 9 different sizes for every icon. This is definitely one of the most complete sets available online.

This set designed for instantShift contains 246 social networking icons. Each icon is available in 64x64, 32x32, and 16x16px. Very colorful, and lots of depth in this set!

Download four super high resolution Basic 3D shape PSD's . Available in .png icon format too.

12 Christmas themed icons available for free download. Icon set includes 256x265, 128x128 and 64x64px .png icons.