The world’s first social networking icons with integrated dual core technology guaranteed to enhance the performance of your applications or blog. Package contains 10 Royalty Free icons that can be used for personal and commercial purposes.

Icon sizes: 128×128 48×48 32×32 16×16
Download:  Social 2 Duo Iconset

This Origami web iconset is designed by Double J and released on icondock.com.  There are 15 free icons in 5 different sizes (16px, 32px, 48px, 128px, and 256px). You can use them for your desktop or web applications.

Download:  15 Free Origami Icons

Web Injection is an Icon Pack for webmasters and web developers created exclusively for the viewers of Tutorial9. The set includes 26 stylish icons designed by Midtone Design Studio.

Each icon is a .png at 48×48px. The Icons were tediously hand crafted by designer Jonatan Castro Fernández.

Download: Web Injection Iconset

80 web icons can be used for general web applications such as blog themes, forums, and eCommerce sites. The icons are available in 5 different sizes (16×16px, 24×24px, 32×32px, 48×48px and 128×128px) and come as Windows ICO and 32-bit transparent PNG files.

Designed by: doublejdesign
Download: 20 Free Blockie Icons

SEM Labs made a number of 48 by 48 icons for use on the front and back-end of the site. They released them for free use under the Creative Commons (by) licence.

Download: SEM Labs Web Blog Icon Pack