Brand icons may be subject to trademark and brand guidelines of their respective owners. Always check before deploying other companies’ branding. Brand Icons: fa-adn fa-android fa-apple fa-bitbucket fa-bitbucket-square fa-bitcoin (alias) fa-bluetooth-b fa-btc fa-codiepie fa-css3 fa-dribbble fa-dropbox fa-edge fa-facebook fa-facebook-square fa-flickr fa-fort-awesome fa-foursquare fa-github fa-github-alt fa-github-square fa-gittip fa-google-plus fa-google-plus-square fa-html5 fa-instagram fa-linkedin fa-linkedin-square fa-linux fa-maxcdn fa-mixcloud fa-modx fa-pagelines fa-pinterest fa-pinterest-square fa-product-hunt fa-reddit-alien fa-renren fa-scribd fa-skype fa-stack-exchange fa-stack-overflow fa-trello fa-tumblr fa-tumblr-square fa-twitter fa-twitter-square fa-usb fa-vimeo-square fa-vk fa-weibo fa-windows fa-xing fa-xing-square fa-youtube fa-youtube-play fa-youtube-square Brand Guidelines (incomplete list): Android: http://developer.android.com/distribute/googleplay/promote/brand.html Apple: http://www.apple.com/legal/intellectual-property/guidelinesfor3rdparties.html Dribble: http://dribbble.com/branding Dropbox: https://www.dropbox.com/branding Facebook: https://www.facebookbrand.com/ Foursquare: https://foursquare.com/legal/trademark https://foursquare.com/about/logos GitHub: https://github.com/logos Gittip: https://www.gittip.com/about/terms/ Google Plus: https://developers.google.com/+/branding-guidelines HTML5: http://www.w3.org/html/logo/ Instagram: http://help.instagram.com/304689166306603/ LinkedIn: http://developer.linkedin.com/documents/branding-guidelines Pinterest: http://business.pinterest.com/brand-guidelines/ Skype: http://www.skype.com/en/legal/brand-guidelines/ Stack Exchange, Stack Overflow: http://stackexchange.com/legal/trademark-guidance Tumblr: http://www.tumblr.com/docs/en/trademark_guidelines Twitter: https://about.twitter.com/press/brand-assets Vimeo: http://vimeo.com/about/brand_guidelines Windows: http://www.microsoft.com/en-us/legal/intellectualproperty/Trademarks/Usage/Windows.aspx Xing: https://dev.xing.com/docs/policies YouTube: http://www.youtube.com/yt/brand/