Advanced Rangefinder
sorcerykid

Extends the API with search capabilities for entities

Barrier
erov

Barriers with optional placement restrictions.

Blood Bane Sword
Blocky Player

OP sword for moderators. In memory of an old teacher, who had a mod similar to this on a private server.

Edutest
zeuner

Provides a GUI frontend for the educational staff.

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.

MineTest FileManager (MTFM)
IlzumiZeminori

Formspec-based file manager with text editor and image viewer

Playtime Limit
Linuxdirk

Limit how long players are allowed to play

YL Ticker
AliasAlreadyTaken

Displays messages once per timeframe

Emeraldshop
N Freeman

Currency like shops to trade with emeralds in your Emeraldbank.

Safe TNT
1F616EMO

Apply height restrictions to TNTs

Server Lockdown
1F616EMO

Keep non-admin players away during maintainence

Aratox Anticheat
zanderdev

Severside Anticheat. Remove cheaters from your server automatically.

Tune JIT
rudzik8

Tunes LuaJIT parameters to improve server performance by preventing constant GC

MT POI Map
beaver700nh

Displays a map with points of interest, for any game (no dependencies).

Localized Server News
ronoaldo

Display localized server news when a player joins

warn
Neocraft1293

simple mod to warn players

Auth Redux
sorcerykid

A drop-in replacement for the builtin authentication handler

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.

InvManager
IlzumiZeminori

Allows to check and remove items from players' inventories

Teleport Anchor
1F616EMO

Fixed teleport destinations for survival players or adventure map makers

Agree rules
AiTechEye

Agree rules or be kicked

Invisible Blocks
Truemmerer

Add invisible Blocks

CentralAuth
1F616EMO

Player account unification across Luanti servers

Terramod-Staff
Bapt-tech

Many commands and functions for admins and moderators

DataMiner
sorcerykid

DataMiner is an analytical tool for server operators with a feature-rich API for customized report generation

WillAdmin
WilLiam12

Tools for server admins to ban and kick bad players.

Node Admin
Neuromancer

Admin tool to get node info & dig undiggable nodes

AFK Kick (AFK Indicator)
1F616EMO

Kick inactive players

VPS Blocker
Lejo

Block players using vpns, proxys or other hosting services

Server Cleaner
AiTechEye

Keep the server clean and simple

DTools
Logikí

this gives tools for developers

Server Essentials
jolethen

An essential mod for any server

Server News
Shara

Show server news when players join

Admin mailing list and report
1F616EMO

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

Minetest Teams
pl608

simple multiplayer team system

Temp Privs
ChimneySwift

Overwrites the default grant, grantme and revoke chatcommands to add revoke or grant expiration.

Scramble
tacotexmex

Renames all nodes to a hashed equivalent.

builtin overrides
fluxionary

minor QOL overrides for some builtin behaviors

Recover from irrecoverable lag
1F616EMO

Restart the server when it lags too much

PerfHUD
Juri

Adds an HUD which shows some performance stats.