10 sets of 1000 high-quality free png format icons with the size of 16×16 and 32×32 pixels for web desingers, web developers and bloggers. The the icons can be use for private or commercial projects. The icons are licenced with Creative Commons Attribution 3.0 License. Please give them a link back to http://pc.de/icons/ would be still nice.
FatCow is a web hosting company provided 1000 free Farm-Fresh web icons for free download. The icon set contains 16 and 32 pixels size PNG format. The icons are licensed under a Creative Commons Attribution 3.0 License. So you can use the icons for any purpose, private, commercial, online services, templates, themes and software.