Today we are releasing a new icon set under a creative commons license. It was created for the Ozone Solutions website (where you can see it in use). Feel free to download a copy from here to use if you wish (under the terms of the license).
The icons are in a svg file. They are lined up nicely to make it easy to use for css sprites. If you need a program to edit svg files, you can download Inkscape for free. Inkscape was used to create the icons.
The version on the Ozone Solutions website contains a few additional icons (with logos) which are not included in the version licensed under the creative commons license.