Fling's new app icon by Steve Roberts - Good looking shapes and the color combination. The shadow makes the clean minimalistic shape jump too much.
A little sensitive music application icon.
Nice Doing Business icons by Dutch Icon
font inspiration - R Grid by George Bokhua
Hey, Simple gradient icon for color (gradient making) picker app which I worked a few month ago.
Are you finding for a free icon, then Adobe MAX Demo App Icon [PSD] is the choice for you. I am happy to share with you today a set of Free Adobe MAX Demo App Icon [PSD] that you can customise as you see fit.
30 Examples of Minimal App Icons - UltraLinx
Icon grid by Tom Nulens