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 Sans Thai, Noto Sans Hebrew, Noto Naskh Arabic UI and Noto Color Emoji are released under SIL open font license 1.1 ( https://www.google.com/get/noto/ )

Noto is a trademark of Google Inc. Noto fonts are open source. All Noto fonts are published under the SIL Open Font License, Version 1.1. Language data and some sample texts are from the Unicode CLDR project.

Cantarell font is released under the SIL open font license 1.1

SigmarOne is released under the SIL open font license 1.1 ( https://www.google.com/fonts/specimen/Sigmar+One )