Unity

This set is a collection of 225 stylish, high quality, polished stock icons. This set is great group of icons for web design, application development, graphical user interface design, presentations and more. They can be used on both Mac and Windows platforms.

Unity’s icons come in 48 x 48 px, 32 x 32 px, and 16 x 16 px sizes. Each icons comes in PNG, ICNS and ICO formats.