Polygraph
sorcerykid

A formspec-based charting API providing a rich set of output parameters

ActiveFormspecs
sorcerykid

ActiveFormspecs is a framework that abstracts the builtin formspec API of Minetest

Bedrock Markup Language
sorcerykid

Bedrock Markup Language is an extensible markup language and API for formspecs.

Signs Redux
sorcerykid

Signs Redux is a complete rewrite of default signs that adds many new features