Protector Redo
TenPlus1

Lets players craft special blocks to protect their builds or disable PVP in areas.

WorldEdit
sfan5

In-game world editor. Use it to repair griefing, or just create awesome buildings in seconds.

Handle Schematics
Sokomine

A library to make creating and placing saved areas easier.

WorldEdit Additions
Starbeamrainbowlabs

Extra tools and commands to extend WorldEdit. Currently has over 22 commands!

Areas
ShadowNinja

Areas is a advanced area protection mod based on node_ownership.

Run Or Fall (like TNT run)
niwla23

This is a small game like TNT run, but for mt

Automatic Cave Lighting
Hybrid Dog

Add two chatcommands to automatically light up dark places (e.g. caves) with lighting nodes such as torches.

Powertools
rubenwardy

Adds tools to make map editing easier.

CTF Map Maker
rubenwardy

Create maps for Capture the Flag, search "creating ctf minetest" on youtube for help

Map Tools
Calinou

Adds various special versions of normal blocks, tools, and other map maintainer tools.

Creative for NodeCore
Warr1024

"Creative mode" for NodeCore: adds a rc_reative priv, /rs chat command, and "replica" nodes.

Jean's Economy
Jean3219

Full Economy for Servers like, paying, individual bank statemants, daily rewards, easy api for modders, easy integration with other mods ...

Admin Toys
wilkgr76

Tools for admins to have fun with cheating and otherwise rule-breaking players

Superpickaxe
Hybrid Dog

A tool to remove any pointable node and reveal debug information

Whitelist
Zughy

Manage who can and who can't enter in your server

Advanced Rangefinder
sorcerykid

Extends the Minetest API with search capabilities for entities

Debugging Console
sorcerykid

Provides an in-game HUD to easily monitor debug output

Map Fixer
Gael de Sailly

Fix some map errors (flow and light problems)

Smart Chat
Clyde

A new, lightweight, simple and modular Chatsystem

Rename
niwla23

This Mod can rename Items

Dais Ex Machina
Warr1024

An other-worldly platform to preserve some of your stuff across map resets for NodeCore

Name Hider
Shara

Minetest mod to hide player names

IRC Commands
ShadowNinja

Control your server from IRC

Wonderpick
Lone_Wolf

Adds a pickaxe that can dig almost any block

Mese Restriction
Shara

Restrict mesecons use to require a privilege.

Cmd Aliases
rubenwardy

Adds chat command aliases.

Insecure Lua Editor
rubenwardy

Gives each player a virtual filesystem, and allows them edit files and run unrestricted lua code.

QA-Block
bell07

A mods development / QA helper

No More Guests!
kaeza

Stops guest players from joining Minetest

WillAdmin
WilLiam12

Allows server admins to ban / kick using a tool

Minetest Systemd (API)
Piezo_

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

Internet Relay Chat
kaeza

Connect your server to an IRC channel, and install irc_commands to control the server from IRC

Report
rubenwardy

Allows players to report misconduct or bugs using /report.

Notices
Lone_Wolf

Adds chatcommands server staff can use for announcements

Blacklist Name
ANAND

Blacklist offensive names, forcing players to join with different names.

Playtime Recorder
Lejo

Use /playtime to get the time you played

Caps Alert
ANAND

Catches chat messages with all-caps and warns / kicks players.

ServerSay
Truemmerer

Write in the Chat as Server

Auth Redux Lite
sorcerykid

Robust and lightweight authentication handler for use on servers

SzUtilPack
Warr1024

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