The SIL Open Font License (or OFL in short) is a free and open source license designed for fonts by SIL International for use with many of their Unicode fonts, including Gentium Plus, Charis SIL, and Andika.
SIL Open Font License — свободная и открытая лицензия, разработанная SIL International для использования с некоторыми из своих Unicode шрифтов.