Source Serif Pro is a serif typeface created by Frank Grießhammer for Adobe Systems. It is the third open source font family from Adobe, distributed under the SIL Open Font License. The typeface is inspired by the forms of Pierre Simon Fournier, especially his Manuel Typographique typeface. This family of fonts is a complementary design to the Source Sans family. It is available in six weights (Regular, ExtraLight, Light, Semibold, Bold, Black) in upright styles. Italic and bold styles will be released at a later date.