Isogen
BuckarooBanzai

Generate isometric images from ingame builds

Basic HUD textures
Wuzzy

Adds basic but neccessary HUD images: Heart icon, bubble icon, … (for game authors)

name monoid
fluxionary

flexible control of a player's nametag

Dialog Redo
1F616EMO

Flexable dialog API

ReSpec
ZenonSeth

Easy and Versatile Formspec Creation based on ConstraintLayout

MQTT Client Library
Tuxilio

A mod for MQTT communication

Advanced Chat
LMD

A library for advanced chatting.

filter++ lib
rstcxk

provides an API for filtering text

Prop Hunt Modpack
Jo5629_

Transform into nodes and with a minigame.

Squill
Luke

A subset of SQL. No complex installation required.

GroupLib
rudzik8

General grouping API

Stent
AFCM

A formspec based arena entrance type for arena_lib

Ambience API
1F616EMO

API for playing background musics

Japanese Name
Logikí

transform your player name to japaNESE (joke)

Chat Games API
Impulse

An API to build chatgames like those in the chatgames

YL Ticker
AliasAlreadyTaken

Displays messages once per timeframe

status effects
fluxionary

api for defining player status effects

Signs Redux
sorcerykid

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

SSCSM implementation
Luke

A server-sent CSM library.

Matrix Chat
joenas

This mod creates a bridge between a Matrix channel and the in-game chat!

Be2een Api
_gianpy_

timers, animation and action! ciack

World Storage [deprecated]
Sumi

[DEPRECATED] Allows saving and loading data to the world folder, and offers an alternative to global settings

Player Info [deprecated]
Sumi

[DEPRECATED] Adds a way to track information about the player and controls.

Subcommands
1F616EMO

API to make commands with subcommands

Benchmark Engine
theFox

Engine for running benchmarks ingame.

Emerald Bank (MineClonia)
N Freeman

Keep your Emeralds in a Bank, a complete economy API

default sounds for other games
awuuwa

mods that only depend on "default" for sounds, can be made to use this mod to source the sounds from

Oreveins
ApolloX

A node which produces ores

World Data Manager Library
AntumDeluge

A library for managing data files in the world directory.

Metavectors
theFox

vectors using metatables to make coding easier

Walkover
lordfingle

A library to make it easier for developers to detect on_walk_over

Lambda
benrob0329

Atomic lambda string-parser for Lua.