Everyone loves icons. Whether you are a developer looking for ways to ‘beautify’ your user interface or you are putting together a presentation, attractive icons make a good impression.

In the past, I have pointed out the excellent collections from FamFamFam which is free for both private and commericial use. So on that note here are a couple of sites which point out links to tons of free icon collections:

• Smashing Magazine
• LyteByte

While all these icons sets are free for personal use, if you want to use them commercially be sure to check out the terms of use for the particular collection to make sure it is ok with the author.

One resource to take note of is the Tango Icon Library which is an open source project trying to unify icons used in other open source projects.