Playerfactions
mt-mods

A simple mod which allows player created factions. Not very useful on its own, it becomes very powerful when combined with other mods.

Chromakey
SkyBuilder1717

Adds an chroma blocks for videos or photoshop.

PerfHUD
Juri

Adds an HUD which shows some performance stats.

Simple Commands
enchant97

Adds simple chat commands

Metatool
SX

Provides API to register node metadata tools along with few useful tools

Pick And Place
BuckarooBanzai

Pick and place utility

Voxelizer
LMD

Turns 3D models into astonishing voxel builds.

titou nicknames
titou4

manage visibility of nicknames of players

Mapsync
BuckarooBanzai

Synchronize the ingame map with a lua-backend

Scripted World Editor
Neuromancer

API that allows you pass in scripting tables to fill a series of shapes of different sizes with different nodes

No Floating Gravity Blocks
nneett

Registers an abm to not leave falling blocks floating

Place Node Command
1F616EMO

Add `setblock` and `place` command

Server Essentials
jolethen

An essential mod for any server

Edutest
zeuner

Provides a GUI frontend for the educational staff.

Lift On Joinplayer
luarocks

Lift player up on login until he has no air block under his legs.

Advanced Rangefinder
sorcerykid

Extends the Minetest API with search capabilities for entities

Hades Revisited back-compatibility
SFENCE

Make old Hades Revisited world compatible with new versions of Hades Revisited (from version 0.7.0 to 0.13.0).

Day-Coin Vote
Tomlaus

Adds an item that allows you to vote on whether it should become day!

Fly-B-Gone!
Hugues Ross

Hides butterflies/fireflies

LocalChat
qPexLegendary

Adds local and global chat

Copier
1F616EMO

A tool to copy and paste nodes from a file or from a tool

Superpickaxe
Hybrid Dog

A tool to remove any pointable node and reveal debug information

Wonderpick
LandarVargan

Adds a pickaxe that can dig almost any block

No More Guests!
kaeza

Stops guest players (ie: Guest1234) from joining your server

Modding Commands
DragonWrangler

Adds Hopefully helpful commands for modding

Spawnarea
Casimir

Players spawn and respawn within an area around the center of active players.

Advanced Chat
LMD

A library for advanced chatting.

Edutest Chatcommands
zeuner

Provides chatcommands for the educational staff.

Riddance
Blockhead

Hide or rid yourself of unnecessary items from games and mods without any code

Vote Day
niwla23

This adds a command to vote for making day!

Global Patterns
Albert-Dimensioner

Place a node to generate a pattern from that node using that node

Playerfactions Ext
IRI

extension of Playerfactions which adds sub-commands that allow you to teleport, give/withdraw privs and/or items to all members of a faction at the same time or for one player in a faction.

rPlace Analysis GUI
1F616EMO

Formspec GUI for rPlace Analysis

Node Placer Saving
1F616EMO

Put node placer data into the node

Minetest Systemd (API)
Piezo_

Debugging utility and compatibility tools for server owners and/or modpack creators

Modpol
ntnsndr

Framework that enables diverse governance processes

Metadata Inspector
1F616EMO

Inspect or modify metadatas of a node

Send Stack
ChimneySwift

Adds a command to send the stack you are holding to another player (requires ban priv)

Items Update
SFENCE

Update items in player inventory if they are alias.

DeltaTime
SkyBuilder1717

Adds deltatime API