Unter Null
Casimir

You start swimming in the middle of an infinite ocean. Take your time and build.

Enable sneak glitch
Krock

Enable the sneak glitch again!

NodeCore Cats
Warr1024

Add adorable cats to NodeCore

Consistent stars
fetsorn

Makes the stars in the night sky consistent day by day, based on the world seed.

Cloud Control
ROllerozxa

Control whether clouds are enabled on per-player basis

Visual Bots
Nigel

Visually programmable turtle bots

Realistic Player Names
Extex

Gives players realistic names when they join, great for role-playing servers!!

Chat Log
AntumDeluge

Save chat history.

Saturation Adjustment
ROllerozxa

Adds a chat command that allows you to adjust the saturation of the graphics.

Alone
Codiac

A Luanti mod to disperse players around the world

Pickblock
ROllerozxa

Allows you to put the selected node in an empty slot of your hotbar when you're in creative mode.

Condensed Cobblestone
1F616EMO

81 cobbles in one item!

Japanese_letters_modpack
ofg

Japanese hiragana blocks

Beware the Dark
Ben

Darkness hurts.

Public Tp
Impulse

Allows players to create, manage and use public teleport places.

Gray Death
srifqi

Make the world look grayscale when you die

Whiter List
AntumDeluge

Restrict server access to only whitelisted players

choppy
fluxionary

yet another tree-cutting mod

Fake unknown node
orwell

Adds a node that looks like an unknown node

Pick Axe Tweaks
mt-mods

Adds the ability for pick axes to place light nodes on right click

Petroglyphs
Neuromancer

Adds petroglyphs which generate randomly in desert stone walls

Awards STL
vejou

Adds awards to Stellua, and an API to register new ones. Based on Rubenwardy's Awards.

Cross-Section
Silver Sandstone

Cuts the world in half.

ServerSay
Truemmerer

Write in the Chat as the server

Minetest Discord Webhook
activivan

Mirror your in-game chat to Discord using webhooks

Manny
ElCeejo

Adds Manny from that one Reddit post.

Account Manager
rubenwardy

Automatically create accounts in bulk, and export to .CSV and .HTML (and .PDF)

Floppies
ROllerozxa

Throwable floppies... That's what they're used for right?

Dice
Wuzzy

Decorative dice blocks which face a random direction.

UndoMistakes
mi.sh

You can undo Mistakes, such as stripping Wood

No Lag
AFCM

[April fool's joke] Removes Lag

Playtime Recorder
Lejo

Use /playtime to get the time you played

J_Mute
j45

Mute players that are spamming.

Troll
ROllerozxa

Troll your friends and foes nicely!

Mask
GenesisMT

A simple mask you can wear.

Sunset Biomes
RisingLeaf

Adding two biomes and stuff around them.

Tools Using the Node Damage and Repair System
Noodlemire

Overrides pre-existing tools to make them cause persistent node damage.

Last Login Signs
fgaz

Adds signs that show the last login of players that right-clicked them

Holoemitter
BuckarooBanzai

Holo emitter mod

Itemstring Viewer
Holly Mae

Displays full itemstring of a held item