Free icon collections are nothing new, darn near everyone offers a few icons here and there for download. But rarely does a collection the size of Silk come along, let alone for free. Mark James’ wildly popular Silk icon collection has grown from just over 300 icons in 2005, to over 1,000 now. With the release of version 1.3 of Silk, James is now calling the set “complete.” The Silk icon collection (16×16 pixel, .png format) can be downloaded for free, but comes attached with the CreativeCommons Attribution License, meaning you must credit James with a link on your site if you use them.