The Grue mod
Majozoe

It is pitch black. You are likely to be eaten by a Grue.

Random Cool
pl608

Adds random ores on lava cool

Nyfty Blocks
Ryft77

Adds some nifty blocks

Lock Replicator
mazes

A tool to replicate locks

Tomb Stones
Nathan.S

Adds many shapes and styles of tombstones.

Filter
sofar

A chat filter for servers, to warn/kick/ban on swearing

Death Timer
Coder12

This will force players to wait a specified amount of time on death.

Frozen Energy
bell07

Use frozen energy crystals to freeze water

Punch And Place Particles
epCode

Makes satisfying particles when placing a node or punching one. (viewable by all players)

Grass Instabreak
MrBertram

Makes certain flora blocks instantly breakable by hand.

Feather Fall
ApolloX

Holding this feather makes you light as it

Inspector
sofar

An in-game tool to inspect node parameters and metadata.

Stairs Recycle
DumbDave961

Turn stairs into ingots, slabs, or different stairs. Smelt cobble stairs into stone stairs. Highly recommended for Oneblock survival. Based on Simple Recycle by Jolesh.

Minetest Extended
PetiAPocok

The extended version of the default Minetest Game.

Warning: Non-free media.

Aether
iarbat

Adds a hard to obtain yet powerful substance called Aether.

PM Plus
LandarVargan

Colors Private messages in chat and plays a notification sound to players that are messaged

visible health bar
GigaByte

adds a visible health bar above the player

AFK Protective Kick
1F616EMO

Kick AFK players facing dangers

Saw
Sofik5800

Saw that deleted from MultiCraft

AFK Kick
GunshipPenguin

Kick players who do not move for a while

Item Extensions
Sumi

Support for more callbacks for items, such as `on_step` and `on_select`

QA-Block
bell07

A mods development / QA helper

ExplorerTools All (Tools place item on right click)
Kilarin

Tools place item in next inventory slot on right click

Rename
niwla23

This Mod can rename Items

Ham Radio API
VinAdmin

Add-on for the Ham Radio mod that allows you to implement the transmission of messages between servers via web api

use_texture_alpha workaround
1F616EMO

Fix boolean use_texture_alpha on MT5.9+

Drop Blacklisted
uyku

"Don't add the specified drop(s) to the inventory when digging"

Slope Lib
epCode

A lib that calculates the average 3d slope of surrounding nodes from a position and raduis.

limit_physics_monoids
fluxionary

overrides monoids controlling player physics provided by player_monoids, to limit how big they can grow.

golden_bread
MR_breaddz

golden bread

Inspect Tool
SFENCE

Inspect tool to show some info about nodes which support inspection.

Nickname
snowyu

This mod set a nickname with color to the player.

Un-Craft Table
Troodon

Adds an uncraft table

Chat Translator
Droog71

Translates chat messages in Minetest using LibreTranslate.

Only a Coin
Deadlock

just a simple coin, to be used as currency

Body Pillow
mt-mods

adds body pillows

LibreAdventure3
Hanuko33

Minecraft golden age clone with improvements

debuggery
fluxionary

debugging tools for server admins

Scarlet
sorcerykid

Scarlet is a thin-wrapper library that simplifies the layout of formspec elements.

English Phonics
Neuromancer

English Phonics (Learn how to sound out words and to read)