20 New Icon Sets (Including Icon Fonts) for Design & Development
12 12/2011 Displaying Icons with Fonts and Data- Attributes
Over 600 Free Minimal Icons for UI Design
Patternify | CSS Pattern Generator
Generate a variable 1kb grid valid css/ xhtml grid system
handy
Iconic Icon Set
103 icons in raster and vector format — Some Random Dude
APNG - the animated PNG
Animated PNG files that retain backward compatibility with non-animated PNG files, w/support for 8-bit transparency and 24-bit images