PRANG!
Luke

An unofficial port of PRANG!, a 2D arcade-style game.

Flow
Luke

A formspec library that automatically positions and sizes elements

Snippets
Luke

A way for admins to run and save lua snippets.

Formspec AST
Luke

A library to help other mods interpret formspecs.

Flow Inspector
Luke

An "inspect element" helper for flow GUIs

Cloaking
Luke

Allows admins to become invisible and appear as if they are not in-game at all.

advmarkers
Luke

Allows you to create and manage markers/waypoints.

HUD FS
Luke

A library to make HUDs from formspecs

Blueprints
Luke

Allows Minetest players to easily copy+paste nodes.

FS51
Luke

Compatibility layer for formspecs

money3
Luke

Adds /money.

Valentine's day
Luke

Adds valentine cards

Verbana GUI
Luke

A GUI for verbana

Stasis
Luke

Allows players to be put in stasis.

SSCSM implementation
Luke

A server-sent CSM library.

flinv
Luke

API to add new inventory tabs which work across different inventory mods