SoftIcons.com allows to download icon sets free of charge (at least for personal use). The catalog contains 408,255 icons/images in 2,477 sets. Popular tags: facebook, twitter, home, apple, search, photoshop, phone, folder, cloud, arrow, book, youtube, linkedin, pinterest.

For information of the possibility of public use, please read the license agreement on the respective icon set. Also SoftIcons.com renders additional icon-related services.