SIL Open Font License
|SPDX identifier||OFL-1.0, OFL-1.1|
|Debian FSG compatible||Yes|
SIL International designed the Open Font License for use with many of their Unicode fonts, including Gentium Plus, Charis SIL, and Andika. The license was first released in February 2007, six months after the GPL font exception was released.
OFL is a free and open source license. The license is considered free by the Free Software Foundation, which states that a simple hello world program is enough to satisfy the license's requirement that fonts using the license be distributed with computer software when selling them. The Debian project agrees.
The Open Font License is a free software license, and as such permits the fonts to be used, modified, and distributed freely (so long as the resulting fonts remain under the Open Font License). However, the copyright holder may declare the font's name as being a "Reserved Font Name", which modified versions then cannot bear. (This includes subsetting for web fonts.) The license permits covered fonts to be freely embedded in documents under any terms. The only stipulation is that fonts cannot be sold on their own, though they may be included in software bundles for sale.
- The DFSG and Software Licenses
- FSF: Licenses for Fonts
- Spalinger, Nicolas; Gaultney, Victor (September 19, 2010). "Question: 1.15 What about distributing fonts with a document? Within a compressed folder structure? Is it distribution, bundling or embedding?". OFL-FAQ web version (1.1-update5). SIL International. Archived from the original on August 7, 2019. Retrieved November 3, 2019.
- Garish, Matt; Gylling, Markus (2013). Epub 3 Best Practices (PDF). O’Reilly Media, Inc. p. 139. ISBN 978-1-449-32914-3. Archived (PDF) from the original on November 3, 2019.
- Suehle, Ruth. "Then, now, and the future of open source fonts". Opensource.com. Retrieved March 5, 2021.
- "SIL Open Font License (OFL)". scripts.sil.org. Retrieved March 5, 2021.
- "Bitstream Vera Fonts – April 16, 2003 – GNOME". Retrieved March 5, 2021.
- Wagner, Josh; Stein, Joel (August 21, 2020). "Goldman Sachs Has Money. It Has Power. And Now It Has a Font". The New York Times. ISSN 0362-4331. Retrieved March 5, 2021.
- "Why the US Government Just Made Its Own Font, Open Sans". www.vice.com. Retrieved March 5, 2021.
- "Open Source License Comparison Grid" (PDF). CMU. Archived (PDF) from the original on September 21, 2017. Retrieved November 3, 2019.
- SIL Open Font License version 1.1
- SIL Open Font License FAQ
- Linux.com: SIL Open Font License revised