High Quality Icons for Themes

One of the barriers theme companies face in going full GPL with their themes—thus enabling their themes to be released on WordPress.org Extend—is a lack of great quality icons with open source licensing.

That’s one reason I’m super happy to see Post Format Icons released by StudioPress. Free, high-quality icons to use in your theme. Awesome.

Will this inspire other web designers and WordPress themers to open source their own graphics? I sure hope so.

What are your favorite open source icons?