Source Sans is a set of OpenType fonts designed for user interfaces, as well as for typing for screen and print. It is distributed under the OFL license.
A set of monospaced OpenType fonts prepared for use in software code development environments. The font was designed as a complement to Source Sans and has the same weight range as the corresponding Source Sans font. OpenType supports a wide range of languages using Latin script, and includes all characters from the Adobe Latin 4 glyph set. It is distributed under the OFL license.