Other
- Bitstream Vera (license)
- Caslon Roman (OFL or BSD-like license)
- Cardo (OFL), Unicode 6 and MUFI v3 compatible
- DejaVu fonts (license), a modification and wide extension of Bitstream Vera fonts
- Diavlo font, often used in web comics
- Droid fonts (Apache license), a collection of fonts developed for Google's Android mobile phone operating system
- Fixedsys Excelsior (public domain)
- Gentium (OFL or BSD-like license)
- Ghostscript URW ++ Type 1 fonts, a free alternatives to 35 basic PostScript fonts (GPL, AFPL, LPPL) - e.g. Type 1 version of Nimbus Roman No9 L, Nimbus Sans L, Nimbus Mono L, URW Bookman L, URW Gothic L and others
- (Japanese) Hanazono MinchÅ (permissive license). One of the few free software fonts that includes the whole CJK Unified Ideographs Extension C block, as well as many other (related) CJKV characters, such as the Kangxi Radicals and CJK Radicals Supplement blocks).
- Junicode (GPL)
- Linux Libertine (GPL, OFL)
- Liberation fonts (GPL + font exception)
- Liberastika fonts (GPL + font exception) is a derivative of Liberation fonts with improved Cyrillic
- M+ Fonts (Permissive free software licence: http://mplus-fonts.sourceforge.jp/mplus-outline-fonts/index-en.html#license)
- Old Standard A Unicode font family for classical, medieval and Slavic studies (GPL, OFL)
- Roboto (Apache license), a collection of fonts developed for Google's Android mobile phone operating system
- Source Sans Pro and Source Code Pro, by Adobe
Read more about this topic: Open-source Unicode Typefaces