Over 10000 Free Icons
This site offers you over 10,000 free icons that can be used for different purposes like school work, presentations or can be used commercially also. There are over 20 categories from here you can choose the icon that suits you the best for your usage. It contains a collection of high quality icons for windows, Macintosh and Linux systems. On every icon public usage license can be found.

(Voting: 5.00 From 5 On 1 Vote!) Vote! Why? (Date Listed Mon Aug 3 20:08:03 2009)

Website Icons You can have access over 2000 icons which are easy to use and can be used immediately. This site proposes you the professional icons needed by you. It also offers you vista style icons.
(Voting: 5.00 From 5 On 2 Vote!) Vote! Why? (Date Listed Mon Aug 3 20:08:21 2009)

Icon Archive This site provides you a set of high quality icons for you desktop in gif and ico format. Over 24,800 icons are displayed in 885 categories from 213 artists. Each icon has a public usage license and these icons can be used for Windows, Linux and Macintosh but copyright of these icons belong to icon authors.
(Voting: 3.00 From 5 On 2 Vote!) Vote! Why? (Date Listed Thu Jan 1 00:00:00 1970)

IconBazaar IconBazaar started in 1993 which contained a small set of graphics by Randy D. Ralph. Up to 20 images can be used if you are a company, an individual or an institution but expects a small donation from your side to support this site. It aims to provide you most useful quality graphic content available on the web.
(Voting: 2.50 From 5 On 2 Vote!) Vote! Why? (Date Listed Thu Jan 1 00:00:00 1970)

All Free Download
If you are searching for a website where you can download absolutely free graphics icons then a good place to start is the All Free Download website. Here you will find a selection of graphics icons as well as some free vector graphics, some free website templates and more. Check out their website to see if there is any useful graphic icons that you may like to use for your web profiles and projects.

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Free Icon Sets
If you are searching for a website that offers free graphic icons for non commercial use then check out the DryIcon website which offers over 3000 sets of graphic icons which you can view online and download and use for free as long as it is not for commercial use. They also offer a a range of free vector graphics, see their website for the terms and conditions of using these professionally designed icons and vector graphics without having to pay for them.

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Clip Art Fonts & Icons At the Cool Archive website you can gain access to over 4000 icons. They are available in two formats, .gif and .ico, so they can be used on your computer or on your website. Besides their great collection of icons which are all free they also have a wide selection of animated graphics, fonts, clip art, textures and more for you to choose from.
(Voting: 0.00 From 5 On 0 Vote!) Vote! Why? (Date Listed Sat Apr 3 15:36:52 2010)