Are there any good icon sites to complement Apache License 2.0?

Question

I'm writing a small GUI application that will be released under the Apache License 2.0. I'd like to pretty it up using some free icons. Of course, just pirating content is wrong. I'd like the copyright license of any images to complement that of the application - that is, permissive use of the content with appropriate attribution (including derivative, closed source and commercial use).

The Creative Commons Attribution license seems to be the most appropriate fit (as opposed to the terms of other Creative Commons licenses). Public domain images are good too, of course, but many sites hosting them tend to be sloppy about noting their origin (raising the possibility of a lack of due diligence).

I've had some success using Google and Search by Creative Commons, but this is still a rather haphazard approach.

Are there any websites dedicated to hosting icon sets suitable for Apache licenses? Trawling through various sites and checking the small print is somewhat tedious.

Have you come across any blogs that link to such works?

Answer 1

The Tango Icon project seems to have a pretty good selection of icons.

http://tango.freedesktop.org

It's licensed under Creative Commons Attribution Share-Alike license.

Answer 2

There is a large collection available at http://www.everaldo.com/crystal/. It is LGPL licensed.

Answer 3

The FamFamFam Silk icon set is something of a web standard these days and falls under the Creative Commons Attribution license as requested. Roughly 1,300 icons, so it's pretty extensive.

Answer 4

Smashing magazine has free icon sets as well as other resources you could use. I think there are a couple there that might suit your needs.

Answer 5

Alternatively, you could get a copy of IconWorkshop and build your own. It's a pretty good icon building utility.