Formspec AST by Luke
A library to help other mods interpret formspecs.
Flow Formspec Collection
A collection by lazerbeak12345
A collection of tools for making use of flow
This collection is not officially associated with flow
Flow is a GUI library for minetest that provides a much easier way to make dynamic formspec and hud content.
Here's some tools you should use as a flow form developer.
Packages
Debug by LMD
Debugging on steroids
Flow Extras by lazerbeak12345
An experimental collection of extra widgets for flow
Flow Inspector by Luke
An "inspect element" helper for flow GUIs
Flow by Luke
A formspec library that automatically positions and sizes elements
Sway by lazerbeak12345
An experimental beyond-next-gen inventory
Player Settings by 1F616EMO
Player-specific settings
FS51 by Luke
Compatibility layer for formspecs
HUD FS by Luke
A library to make HUDs from formspecs