GNU FreeFont (FreeSans, FreeSansBold, FreeMono) is released under the GPLv3

wqyMicroHei is released under the GPLv3 with font embedding exception and Apache-2.0 licenses

By Qianqian Fang and The WenQuanYi Project Contributors
Copyright (C) 2008-2009  The WenQuanYi Project Board of Trustees
Copyright (C) 2007  Google Corporation

Noto Naskh Arabic UI is released under Apache-2.0 license