You are free to use these icons for personal and commercial work without obligation of payment or attribution. While attribution is optional, it is always appreciated. The icons may be altered, cropped or otherwise modified or manipulated for your needs.
You may not redistribute or sell these icons (in their original or a modified state) on any other website or source. Distributing and/or displaying the icons as a part of a software product, website, manual, or other package is permitted.
The IKONS are property of Piotr Kwiatkowski and are protected by copyright laws and international treaty provisions. Intellectual property rights are not transferred with the download of the icons. All brand icons are trademark of their respective owners.
Piotr Kwiatkowski shall not be liable to any kind of damage arising from the use of IKONS.
If you use IKONS in your Dribbble shot, please add an "ikons" tag. So I can add it here.