More than 300 icon sets that are conditionally available for commercial use "ASP.NET Icons"

It is very high quality, it is also available for commercial use, the number is alright, the contents itself is finished in a very user friendly design.

Download from below.
Aspneticons.com - free icons for ASP.NET web applications
http://www.aspneticons.com/

Download from below. However, the contents of the license terms have changed considerably.

Aspneticons.com - free icons for ASP.NET web applications Download

Although it is free for personal use and commercial use, you can only use ASP.NET, Mono, ASP web application, or website only. It is said to be "impossible" when using PHP, Perl, ColdFusion, etc. as a platform. In addition, as a use condition, a link to this distribution site itself is also requested.

Design is good, and I am sorry just because there are a number of items ......