32px Mantra v2 Icon Set: 36 free icons in PNG, available in the resolution 32×32px.
Boolean Icon Set: A set of mini icons for private and commercial use. Released under Creative Commons.
MobileMe Icon Set: Six MobileMe icons with the resource PSD. Please ask artist concerning personal and commercial use.
E-commerce Icons Set: 10 high quality E-commerce icons in PNG format. This icon set includes Products on Sale, New Porducts, Checkout, Secure Payment, Credit Cards, Delivery, Shopping Bag, Empty Shopping Bag, Shopping Cart, Empty Shopping Cart.
For free personal and commercial projects (Size: 128, 64, 48, 32px). Redistribution, release for download or selling of these icons on an another site without permission is not allowed.