Firefox
Sean Martell for Mozilla <a rel="nofollow" class="external autonumber" href="https://blog.mozilla.org/creative/2013/06/27/a-new-firefox-logo-for-a-new-firefox-era/">[2]</a><a rel="nofollow" class="external autonumber" href="http://blog.seanmartell.com/2013/06/27/rebuilding-a-simplified-firefox-logo/">[3]</a>
CC BY 3.0
<a rel="nofollow" class="external free" href="https://www.mozilla.org/en-US/styleguide/identity/firefox/branding/">https://www.mozilla.org/en-US/styleguide/identity/firefox/branding/</a>