futil
fluxionary

flux's utility mod

Flow
luk3yx

A formspec library that automatically positions and sizes elements

Tubelib2
joe7575

A library for mods which need connecting tubes / pipes / cables or similar.

SzUtilPack
Warr1024

A collection of misc dependency-free utilities primarily for server hosts.

Adaptation lib and mods
SFENCE

Key based adaptation database of items.

Library Mount
Panquesito7

API Framework for mounting objects.

Advanced Forceload
Kimapr

a better forceloading API

Definition Ripper
Warr1024

Generate inert facades from node/item definitions for use in other games

Chatcommand Library
LMD

Library for registering chatcommands.

BeTween Api
_gianpy_

Interpolation functions and a Tween object to make smooth interpolations in huds or anything else you need.

Power Rangers Modpack
LC Creations

Adds power rangers and an API to create your own.

fmod
fluxionary

flux's mod boilerplate

hand_monoid
fluxionary

player monoid for controlling the look and abilities of the player's hand.

canonical name
fluxionary

api to get the proper capitalization of a name

smartshop (flux's fork)
fluxionary

a smarter and easier shop

node entity queue
fluxionary

a queue for spreading out the generation of node entities over multiple server steps (smartshops, signs, itemframes, etc).

action queues
fluxionary

provides an API for queuing things for batch processing w/ various ways to specify the batch "size".

craftsystem
fluxionary

API for craft registration which automatically deals w/ replacements