http://www.pazera-software.com/cudatext ... bar-icons/
Icons are copyrighted by Axialis SA, but they are licensed under Common Creative (Free, Limited with Attribution) license. In short:
Full text of the license: https://www.axialis.com/icons/license.html#freeIcons can be used freely in commercial and personal projects. However, only limited versions of the icons can be used and Axialis require a copyright notice and a link to their website.
With this license
USER CAN:
Use the icons at native size (scale 1x) in bitmap format.
Use the icons for any purpose, even commercially.
USER MUST:
Give credits to Axialis "Icons courtesy of Axialis Software" with a link to "https://www.axialis.com".
Keep the derivatives. If you remix, transform, or build upon the icons, you may not distribute the modified icons.