Wow! I was just looking for something like this. Thanks for sharing.<p>I especially like the permissive license -- commercial or non-commercial use with modifications allowed and no attribution requirements. Basically, you just can't sell the icons as your own work.<p>That means I can actually have nice icons in this project I'm doing for work. Good stuff.
It's worth noting that these come with a free commercial license, not a FOSS license.<p>That said, for what I'd use them for free commercial is far preferable to GPL.
This is great, I hope he makes more. I'd especially like to see the +,-,x overlays as separate icons. Though that's easy enough to do on your own if you needed to. Still, I love this.