Harddisk Multiset by hezral

Nice small set of SSD-like hard disk icons.

Skype Replacements by Gianluca75

Six different replacement icons in the style of the FaceTime icon.

Safari Set by Michael Flarup

Various awesome alternate compass designs to be used as replacements for the Safari icon.

Tabs Color by Kevin Andersson

Lovely little 40x40 pixel icons, designed for use in iOS tab bars, but they’d work other places as well. Kevin also sells larger sets for super cheap (scroll to the bottom for the free set featured here).

Artcore Icons, Part 3 by Nadja Hallfahrt

Another set of impressively rendered icons in the Artcore series.