These icons come from the FatCow icon set: http://www.fatcow.com/free-icons They are available under the Creative Commons Attribution 3.0 License: http://creativecommons.org/licenses/by/3.0/us/ Some icons have been adapted from the FatCow set for use in Phabricator: key_question.png (from key_*.png) source/web.png (from world.png) source/email.png (from email.png) source/conduit.png (from satellite_dish.png) source/mobile.png (from phone.png) source/tablet.png (from tablet.png)