Don't Forget to participate in a contest where you can win the world's biggest UI elements pack "Impressionist User Interface Elements Pack" for 3 winners (1 developer license and 2 personal license) to design your project more creatively.

WebAppers released the free “Web Application Icons Set� with 3D effect and glossy style. There are 20 icons designed specially for web applications (e.g. Charts, Profile, Search, Add, Delete, Email, Print, Warning and etc…). Icons come in 3 sizes; 48×48 px, 32×32 px, and 24×24 px. All of them are in PNG format with transparent background. Web Application Icons Set is completely Free for both personal and commercial projects in any way you like. You can download them here!