Guilds
RisingLeaf

Adds a very basic guild system.

name monoid
fluxionary

flexible control of a player's nametag

Edutest Chatcommands
zeuner

Provides chatcommands for the educational staff.

Chat3
octacian

Makes chat on a populated server much easier to understand and keep up with.

Breadcrumbs
FaceDeer

Path marker signs for use when exploring a twisty maze of passages that are all alike.

Plastic Box
Starbeamrainbowlabs

Adds a recolourable plastic box. Fork of @cheapie's version with improvements.

Metadata Inspector
1F616EMO

Inspect or modify metadatas of a node

Death Swap
Jo5629_

Switch places with someone random.

Auctions
Athozus

Adds ingame auctions

Extra Stone Utilities
XxCrisThor1012xX

Adds new uses of stone

Quikbild
MisterE

quikbild Minigame

Codecube
giga-turbo

A game where the player can construct by programming

NodeCore PumMINE
Winter94

Mineable pumice

Shortcut
Derevio

Adds the ability to set shortcuts to commands.

DTools
Logikí

this gives tools for developers

Cottonseed Oil Fertilizer
1F616EMO

Powerful fertilizer from cotton seed

itemshelf (Fork)
nac

Generic item shelf with 3D items on display

Item Replicator
ApolloX

Replicate items with ease.

Seekblock
empeeu

Minigame where players seek a different block among a clutter of other blocks.

Filter
sofar

A chat filter for servers, to warn/kick/ban on swearing

Offline Phantoms
Kimapr

Players leave "phantoms" when leaving; other players can take items from those

Key Combos
epCode

A lib for adding actions when certain keys are pressed in order.

CTF Info
Jo5629_

Know what is happening in CTF in your world.

Admin mailing list and report
1F616EMO

Add mailing list for admins and moderators, and a report function

Proximity Chat
GreenXenith

Only hear chat from nearby players.

Stopwatch
sorcerykid

Stopwatch is Lua-based benchmarking API for Minetest developers

Fruit Tree Framework
kronosta

Adds a way to easily add fruit trees, and the ability to have saplings for any item through /giveme

Keep Inv Random
Tomlaus

There is a 10% chance that your inventory will be deleted when you die, even if keep inv is on.

Roadmarks
LukeOfficial

Adds road marks.

Tips
1F616EMO

Send tips to newcomers

Cid Music Pack
ekl

A bunch of music for Cid Music Player

Minetest HTTP API QoS control queue
SX

Improve quality of important HTTP requests by grouping requests into service quality buckets.

Position listeners library
karamel

Players' position observing library

Unified Money Backend: SQLite3
1F616EMO

Storing Unified Money data into a SQLite3 database

Dyeable Steel Blocks
nemokitty9

Allows Players to dye Steel for decorative blocks.

Resource Crops Evolved
Jolesh

Adds new recipes for Resource Crops to make a progression through them possible

Signs Redux
sorcerykid

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

Minercantile
Mathias

Economy featuring a primitive supply and demand system for exchanging goods.

Chat Notification
Misnad

Plays a notification sound to all player when a player sents a chat message.

toolcap_monoids
fluxionary

an API to allow multiple sources to apply changes to a tools's capabilities.