- SourceCodePro 4 Repository for Source Code Pro Font
- source-serif-pro 3 Serif font family designed to complement Source Sans Pro
- RoboFont 2 Python scripts for RoboFont
- Slabo 2 Size-specific fonts for online advertising and other web use.
- source-sans-pro-subset 2 Subset of the Source Sans Pro family made for the U.S. Web Design Standards project