Creative Commons Attribution-NonCommercial-ShareAlike
For non-commercial uses, you may download and use any Chalkwork Icon set under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.
Attribution can be in text or image form, and should link or make reference back to chalkwork.com. A few suggested attribution styles are shown below, and you're free to use any other icon or modify the layouts as needed:
Commercial Royalty-Free Stock Icon License Agreement
Commercial use is permitted only upon purchase. License terms are below; to purchase, find the set you’re interested in and click the Buy button.
By purchasing any of these Chalkwork sets, you agree to the following: the icons remain copyrighted by Dave Shea. You will receive digital icon files and a royalty-free license to use those files within your own personal and commercial projects.
You do not, however, buy the right to distribute or sell these files. Inclusion within software or web sites making use of any open license (the GPL for example) which would change the terms of usage of these icons or make possible unlicensed usage is not allowed, unless icons are specifically exempted from terms of such license and steps are taken to render them unusable by third parties.
These icons are provided “as-is” without any express or implied warranty. Future changes to the icons and/or the license under which they are provided may be made without notice or obligation.
Additionally, these icons are not to be used as, or as the basis for, an organization or product logo, or any other type of primary identifying graphical mark.
Icon sets explicitly marked as free are exempt from this commercial license and may be freely used in commercial work; this exemption currently applies to Chalkwork HTML and Chalkwork Payments.
When in doubt, simply ask.
Non-profit Royalty-Free Stock Icon License Agreement
Non-profit organizations incorporated in Canada may use these icons free of charge according to the Creative Commons personal license above. Non-profits incorporated in other countries must use the commercial license above.
Creative Commons Attribution-ShareAlike
For the Chalkwork HTML and Chalkwork Payments sets only, commercial use is freely granted under the Creative Commons Attribution-ShareAlike license. No license fee is necessary to make use of these icons in your commercial projects, provided your usage meets the terms set forth by the license.