Autorestart
ROllerozxa

Automatically restarts the server after a certain uptime is reached.

Colored Steel
cd2

Adds colored steel blocks.

filter++
rstcxk

censors swears in the player chat using the filter++ liberary

Server Lockdown
1F616EMO

Keep non-admin players away during maintainence

Prismatic Stone
doomburger

Adds decorative prismatic stone blocks, coral dyes, and six new crafting recipes.

Giftbox2
Wuzzy

Gift boxes that players can give to other who will then receive random items

Player IP Log
simondanerd

Mod for any game which logs what users join, and records their IP address. Content saved as a txt file in the worlds directory.

Chat Visual
Itz-Noah

Need a way to distinguish between staff and players?

Moth
iarbat

Adds moths which can send messages (from Lord of the Rings)

Vlf Falling Suprise
VoxelForge

A survival challenge for VoxelForge With a nasty suprise... Beware: This may grief (Or even destroy) your world

Serverguide
AiTechEye

The serverguide

Agree rules
AiTechEye

Agree rules or be kicked

Smart Chat
Clyde

A new, lightweight, simple and modular Chatsystem

Complete and Total Lua-Only Inventory Rewrite
Noodlemire

Creates a completely custom inventory system, which doesn't rely at all on any of the usual UserData objects.

Notices
LandarVargan

Adds chatcommands server staff can use for announcements

Tips
1F616EMO

Send tips to newcomers

Example Lua mapgen
ROllerozxa

A basic example for writing custom Lua mapgen using Perlin noise.

Engravings
Taren

Adds multiple engraved blocks and benches to make them.

Personal Log
FaceDeer

A personal log where players can track events and places

Minetest HTTP API QoS control queue
SX

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

Configuration Pack
X17

Contains several node setting changes

OTP
mt-mods

(T)OTP Verification for player accounts

Item exchange shop
Krock

Provides a simple exchange shop (currency compatible)

Autograph Mod
Jo5629_

Autograph Mod

IRC Commands
ShadowNinja

Control your server from IRC

Fragments
Amaz

A mapgen with a goal, with things needed to advance to the next level.

Antigrief
sorcerykid

An API for validating node and item placement via a simple callback mechanism.

DoAs
Zemtzov7

Execute commands on behalf of another player

Interest for Unififed Money
1F616EMO

Grow your assets over time

modinfo
fluxionary

get info about the mods running on a server

Fareboxes and Faregates
1F616EMO

Signal-emitting fareboxes and faregates

LocalChat
qPexLegendary

Adds local and global chat

Compression Mods Bundle
The4spaceconstants

A bundle of the mods that generate certain compressed nodes.

Alternate Gravel
soeren

the mod adds 32x32 pixels 2x alternative gravel

Antipyre
Warr1024

Safety net against falling off your island

Bunny Hop
Flay Krunegan

Allows players to move faster using a key combination

NodeCore PumMINE
Winter94

Mineable pumice

node entity queue
fluxionary

a queue for spreading out the generation of node entities over multiple server steps (smartshops, signs, itemframes, etc).

Random (Useful) stuff
pl608

A library that adds well... Random Stuff

Hades Endgame
VeproGames

Adds various goodies to Hades Revisited, focused on Late/Endgame