There are 2 repositories under afdko topic.
Monospaced font family for user interface and coding environments
Sans serif font family for user interface environments
Typeface for setting text in many sizes, weights, and languages. Designed to complement Source Sans.
IDS (Ideographic Description Sequence) Tools
Syntax highlighting for OpenType feature files in the Adobe AFDKO format
Themes and syntaxes for the Sublime Text and TextMate editor with a focus on font development
A centralized collection of all materials for my OpenType Features workshops